Unit 2 Inspiring People 单元语法精讲精练学案-2026-2027学年九年级英语上册新人教版(2024)(解析版 +原卷版)

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Unit 2 Inspiring People 单元语法精讲精练学案-2026-2027学年九年级英语上册新人教版(2024)(解析版 +原卷版)

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Unit 2 Inspiring People单元语法精讲精练
“It is/was ... (for/of sb.) to do ...” 和“It is/was+形容词+ that从句”用法
句型一、It is/was ... (for/of sb.) to do ...的用法
1. 句型结构分析:
该句型中it是形式主语,无实际语义,指代后面的不定式短语,这样使用是为了避免主语过长导致句子头重脚轻。
句子中真正主语是动词不定式“to do ...”。
该句型中可以用for/of 来引出人物。
该句型中be动词通常用单数形式。
2. 句型的意义:
如果不用for/of 引出sb.,句型的意义为“做某事......(省略的部分用形容词,对不定式动作进行评价)”。
用for引出 sb.,这时句子侧重点是强调“事情”,重点不在人,这时形容词多是对“事情”进行评价的一些词,如:important, necessary, difficult, easy, hard, possible, impossible, dangerous等。
例:It is important for us to keep healthy.对我们来说,保持健康很重要。(重点在“保持健康这件事。)
It is difficult for him to finish the work today.对他而言,今天完成这项工作很难。
It is dangerous for children to swim alone.孩子独自游泳很危险。果用for sb.(重点在于评价“孩子独自游泳”这件事)
用of 引出sb.,这时句子侧重点是强调“人本身的品质/性格”,重点在评价人,这时形容词多是对“人”进行评价的一些词,如:kind, nice, good, polite, wise, clever, silly, stupid, careless, rude, wrong等。
例:It is kind of you to help me.你真好,帮我忙。(重点在评价人的品质)
It is stupid of him to believe such a lie.他真蠢,竟然相信这种谎话。(重点在评价人的品质)
It was careless of her to leave the door unlocked.她太粗心了,居然没锁门。(重点在评价人的性格)
3. 变否定
句子变否定时,直接把not放 to 前。
例:It is unnecessary for you to go there.你没必要去那儿。
句型二、It is/was+形容词+ that从句的用法
1. 句型结构分析:
该句型中it是形式主语,无实际语义,指代后面的that从句,这样使用是为了避免主语过长导致句子头重脚轻。
句子中真正主语是后面的that从句。
该句型中be动词通常用单数形式。
that是从属连词,只起“把从句绑进来”的作用,无实际意义。
2. 句型的意义:
该句型是对that从句表达的内容进行评价或说明,以为“...是...”
例:It is clear that he is lying.很明显,他在撒谎。
It is surprising that she got full marks.她拿了满分,真让人吃惊。
It is important that we follow the rules. 我们遵守规则很重要。
3. 变否定
变否定直接在is/was后加not。
例:It is not true that he stole the money.说他偷钱,这不是真的。
It wasn’t surprising that they lost.他们输了,并不让人意外。
4. 该句型中也可用for来引出句子描述的情况针对或适用的对象。
例:It is important for us that the plan works.计划能成功,这对我们很重要。
It is hard for him that he must leave. 他必须离开,这对他很艰难。
【拓展句型】
和以上两句型比较相似的句型有:
1. It takes … to do …
例:It takes time for beginners to speak English well.初学者要讲好英语需要时间。
2. It + be + 名词短语 + to do sth.
例:It is a pity to miss the concert.错过这场音乐会真是遗憾。
3. It + 不及物动词 + that从句
例:It happened that I met my old friend on the street yesterday.昨天我碰巧在街上遇到了我的老朋友。
4. It + be + 过去分词 + that从句
例:It is said that he has gone to Beijing.据说他已经去北京了。
5. It + be + 名词 + that从句
例: It is a pity that you can’t come to the party.你不能来参加聚会,真可惜。
一、单项选择。
1.It’s necessary ________ us ________ wash our hands before meals.
A.of; to B.for; to C.of; for D.for; for
【答案】B
【详解】句意:饭前洗手对我们来说是必要的。
根据固定句型 It’s+形容词+for sb. to do sth.“对某人来说做某事是……的”,此处形容词necessary“必要的/必需的”用来描述事情的性质,第一空用for;其后接动词需用不定式,第二空填to。
2.It is important for teenagers ________ how to take care of themselves.
A.learn B.learning C.to learn D.learned
【答案】C
【详解】句意:对于青少年来说,学习如何照顾自己是很重要的。
固定句型“It is +adj.+for sb.+to do sth.”,意为“做某事对某人来说是……的”。it作形式主语,真正的主语是动词不定式短语,后面应接动词不定式 to do。
3.________ is dangerous ________ people to get close to hungry wild beasts.
A.That; for B.It; for C.This; of D.It; of
【答案】B
【详解】句意:人们靠近饥饿的野兽是危险的。
It is +形容词+ for sb. to do sth.:适用于描述事物特征的形容词。It is +形容词+ of sb. to do sth.:适用于描述人物品质的形容词。此处的dangerous是形容词,描述事物特征,因此用介词for,主语用it。
4.The doctors tell us that it is important ________ a healthy diet.
A.of us to have B.of us having C.for us to have D.for us having
【答案】C
【详解】句意:医生告诉我们,对我们来说拥有健康的饮食是很重要的。
of us to have对我们来说;of us having形式错误;for us to have对我们来说(多用于评价客观情况);for us having形式错误。固定句型“It is + adj. + for/of sb. to do sth.”。句中的形容词“important”(重要的)是描述后面所做事情的属性,而不是描述人的性格特征,故应用介词for引导行为的主体;再结合动词不定式符号to构成形式主语的真正主语部分,因此for us to have符合题意。
5.It is important ________ us ________ learn to respect people with different abilities.
A.for; to B.of; to C.for; / D.of; /
【答案】A
【详解】句意:对于我们来说,学会尊重不同能力的人是很重要的。
句子是固定句型“It is+adj.+for/of sb.+to do sth.”,意为“对于某人来说做某事是……的”,当形容词是描述事物性质的词,如:important或difficult等,介词用for;当形容词是描述人物性格或品质的词,如:kind或helpful等,介词用of,因此第一空用for,排除选项B和D。it是形式主语,不定式是真正主语,第二空需填动词不定式符号to,排除选项C。
6.—Was it wise ________ Li Ming ________ that decision
—I don’t think so.
A.of; making B.for; making C.of; to make
【答案】C
【详解】句意:——李明做那个决定是明智的吗?——我不这么认为。
根据“It is+adj.+of+sb.+to do sth.”,形容词wise用来评价人的品质特征,介词应用of;该句型中真正的主语为动词不定式,第二空应填to make符合题意。
7.It’s not far away from school. ________ only takes me ten minutes to walk there.
A.This B.That C.I D.It
【答案】D
【详解】句意:离学校不远。我走到那儿只花费十分钟。
根据固定句型“It takes sb. some time to do sth.”表示“做某事花费某人多少时间”,其中it作形式主语,真正的主语是后面的动词不定式to walk there。故选D。
8._________ careless of you to make lots of mistakes.
A.That’s B.It’s C.It D.Is
【答案】B
【详解】句意:你犯了很多错误真是太粗心了。
固定结构“It’s+adj.+of sb.+to do sth.”表示“某人做某事是……的”,其中it作形式主语,真正的主语是动词不定式。
9.— Was it necessary ________ Mike ________ some pictures before helping the old
— I think so. In this way, he could help himself later.
A.of; taking B.for; taking C.of; to take D.for; to take
【答案】D
【详解】句意:——对迈克来说,帮助老人之前去拍些照片是必要的吗?——我认为是的。这样,他以后能帮助自己。
句型“It is + adj. + for/of sb. + to do sth.”中,形容词说明人的性格特征用介词of,说明事物的性质用介词for。necessary说明事物的性质,故第一空填for;It是形式主语,不定式作真正主语,故第二空填to take。
10.It’s necessary ________ every day to keep healthy.
A.exercise B.exercising C.to exercise D.exercises
【答案】C
【详解】句意:为了保持健康,每天去锻炼是必要的。
固定句型“It’s+形容词+to do sth.”,意为“做某事是……的”,其中It是形式主语,真正的主语是动词不定式。
11.It ________ my father one hour ________ to his office every day.
A.spends; driving B.takes; to drive C.spends; to drive D.takes; driving
【答案】B
【详解】句意:每天开车去办公室要花我父亲一个小时。
It takes sb. some time to do sth.意为“做某事花费某人多少时间”,it作形式主语,后接动词不定式;sb. spend(s) some time (in) doing sth.意为“某人花费多少时间做某事”,主语必须是人。本句形式主语是It,故第一空用takes,第二空用to drive。
12.It ________ a big problem ________ many animals lose their homes.
A.is; that B.are; to C.is; to D.are; that
【答案】A
【详解】句意:许多动物失去家园是一个大问题。
主语It为第三人称单数,第一个空应用is;第二个空后为完整句子,应用连接词引导从句,to是介词,排除。分析句子结构可知,It是形式主语,该从句是真正主语,从句句意完整、不缺成分,用that引导主语从句,无实际含义,仅起连接作用。
13.It’s amazing ________ we have built such a great project in a short time.
A.that B.which C.what D.how
【答案】A
【详解】句意:令人惊讶的是,我们在短时间内建成了如此伟大的项目。
that引导主语从句,无意义;which哪一个;what什么;how如何/怎样。根据题干“It’s amazing ________ we have built...”可知,it作形式主语,真正的主语是后面的从句,从句结构完整,不缺成分,应用that引导主语从句。
14.It’s very likely ________ humans will land on Mars by the 2050s.
A.if B.that C.which
【答案】B
【详解】句意:很有可能人类会在21世纪50年代登陆火星。
考查主语从句。if如果;that引导从句时无具体含义,只起连接作用;which哪一个。分析句子结构可知,“It”是形式主语,真正的主语是“humans will land on Mars by the 2050s”这个句子,这是一个主语从句,且从句不缺成分,所以用that引导。故选B。
15.—It’s strange _______ there are no workers in the restaurant.
—Well, this is a self-service restaurant. People can order meals on the screen.
A.that B.whether C.if
【答案】A
【详解】句意:——真奇怪,餐馆里没有工作人员。——哦,这是一家自助餐厅。人们可以在屏幕上点餐。
考查从属连词辨析。that用于某些动词、形容词和名词后,引出各种从句;whether是否;if如果,是否。根据“ It’s strange...there are no workers in the restaurant.”可知,这里指”没有工作人员的餐馆”很奇怪,此处是that引导的从句作主语,it在此作形式主语。故选A。
16.It’s said ________ the biggest Lego theme park is being built in Shenzhen.
A.that B.which C.whether
【答案】A
【详解】句意:据说最大的乐高主题公园正在深圳建造。
考查that引导的主语从句。that在这里是连词,没有实际含义;which“哪一个”;whether“是否”;根据“It is said ... the biggest Lego theme park is being built in Shenzhen.”可知,此处是句型it is said that“据说”。故选A。
17.—It seems ________ you like to work with children.
—Yes, they are so lovely.
A.that B.what C.to
【答案】A
【详解】句意:——似乎你喜欢和孩子们一起工作。——是的,他们非常可爱。
考查主语从句连接词的用法。that那个;what什么;to向。It seems that+从句,表示“似乎……”,故选A。
18.—Do you know anything new about the 19th Asian Games
—It ________ that Wushu will be the first time that appears in the 19th Asian Games.
A.says B.said C.was said D.is said
【答案】D
【详解】句意:——你对第19届亚运会有什么新的了解吗?——据说武术将是第一次在亚运会上出现。
考查主语从句。本句为一般现在时,句中it为形式主语,指代后面that引导的主语从句。“it is said that…”为固定句型,意为“据说……据传言……”。故选D。
19.________ that more than two thousand people die of the COVID-19. It makes us feel scared.
A.That said B.That’s said C.It’s said D.It said
【答案】C
【详解】句意:据说有超过2000人死于COVID-19。它让我们感到害怕。
考查主语从句。分析题干和选项,that引导的句子作主语,即More than two thousand people die of the COVID-19 is said,为了句子平衡这里需用it作形式主语,而把真正主语移至句末。It’s said表示“据说”,故选C。
20.It is a pity he lost his way in the forest and had to stay there for the whole night.
A.that B.when C.where D.who
【答案】A
【详解】句意:他在森林中迷路了,不得不在那里待了一整晚真遗憾。考查主语从句的连接词。A. that无意义;B. when什么时候;C. where哪里;D. who谁;分析句子结构可知,it在这里做形式主语,真正的主语是后面的句子;句中不缺少任何成分,用that,故选A。
二、按要求完成句子。
21.that, computers, is, super calculators, are, common knowledge, it (.) (连词成句)
___________________________________________________________________________
【答案】It is common knowledge that computers are super calculators.
【详解】分析所给单词和标点可知,该句是陈述句。It为形式主语;is系动词;common knowledge“众所周知的事”,表语;that连接主语从句;computers“电脑”,从句主语;are从句系动词;super calculators“超级计算机”,从句表语,故填It is common knowledge that computers are super calculators.“众所周知,计算机是超级计算器。”
22.To our surprise, this 8-year-old boy came up with his own magic trick. (保持句意不变)
It is ________________________________________________________________________
【答案】surprising that this 8-year-old boy came up with his own magic trick.
【详解】句意:令我们惊讶的是,这个8岁的男孩想出了他自己的魔术。“To our surprise”可以转换为“It is surprising that…”结构,故填surprising that this 8-year-old boy came up with his own magic trick.
23.it’s, that, no, love, secret, tea, Chinese (.) (连词成句)
______________________________________________________________________________
【答案】It’s no secret that Chinese love tea
【详解】根据所给标点可知是陈述句。分析所给单词,it’s它是;that引出从句;no没有;love喜欢;secret秘密;tea茶;Chinese中国人。It’s no secret that+从句,意为“……不是什么秘密”,主语从句句型,it为形式主语,that之后的句子为真正的主语,因此that之后的句子为“中国人爱茶”,即“Chinese love tea”。故填It’s no secret that Chinese love tea 意为“中国人爱茶已经不是什么秘密了”。
24.I haven’t seen that wonderful movie. What a pity! (合并为一句)
________ a pity ________ I haven’t seen that wonderful movie.
【答案】 It’s that
【详解】句意:我还没看过那部精彩的电影。真可惜!分析句子可知,所给句子可合并为一个it作形式主语,that引导的从句作真正的主语的句子,即“It’s a pity that...”,意为“做某事很可惜”。故填It’s;that。
25.Someone said that a gym would be built in our school.(改为同义句)
_________ _________ _________ _________ a gym would be built in our school.
【答案】 It is said that
【详解】句意:有人说我们学校要建一个体育馆。“有人说”也就是“据说”。It is said that...表示“据说”,为固定句型。故填It;is;said;that。
26.My host was nice enough to invite me to dinner. (改为同义句)
It was ________ ________ my host ________ ________ me to dinner.
【答案】 nice of to invite
【详解】句意:我的主人真好,请我吃晚饭。根据要求改为同义句,原句使用了“形容词 + enough to do”结构。在英语中,当形容词是描述人的性格或品质(如 nice, kind, brave 等)时,该结构可以转换为“It is/was + 形容词 + of sb. to do sth.”句型。此处形容词为“nice”,故第一空填“nice”,第二空用介词“of”引出逻辑主语“my host”;第三、四空接不定式结构,即“to invite”。
27.To protect our earth is necessary.(it形式主语)
________ necessary ________ protect our earth.
【答案】 It’s to
【详解】句意:保护我们的地球是有必要的。原句动词不定式“To protect our earth”作真实主语,改写为it作形式主语的固定句型“It is + 形容词 + to do sth.”,其中it仅充当形式主语,后置的to do不定式才是句子真正的主语。①处填入It’s作为形式主语搭配系动词;②处填入to,构成不定式结构to protect our earth作真实主语。
28.To help endangered animals makes us happy. (把不定式作主语改成 it 形式主语)
___________________________________________________________________________
【答案】It makes us happy to help endangered animals.
【详解】句意:帮助濒危动物让我们感到快乐。根据要求“把不定式作主语改成it形式主语”可知,需将原句中作主语的不定式短语“To help endangered animals”移至句末,用it充当形式主语,置于谓语动词前,构成“It+谓语+宾语+to do sth.”的固定句型。原句的谓语“makes”和宾语“us happy”位置保持不变,真正的主语“to help endangered animals”放在句末,使句子结构避免头重脚轻。
29.The workers are kind. They look after the elderly carefully.(合并为一句)
___________________________________________________________________________.
【答案】It’s kind of the workers to look after the elderly carefully
【详解】句意:工人们很善良,他们细心照顾老人。合并句子可以使用“It is+adj.+of sb.+to do sth.”结构,其中形容词kind说明人的品质,介词of表示“某人具有这种品质”,不定式短语to look after the elderly作真正主语。故填It’s kind of the workers to look after the elderly carefully。
30.Giving up our seats to the elderly on the bus is right. (改为同义句)
________ ________ to give up our seats ________ ________ ________ on the bus.
【答案】 It’s right to the elderly
【详解】句意:在公交车上给老人让座是正确的。改为同义句,可用“It is + adj. + to do sth.”结构,其中it作形式主语,动词不定式作真正主语,原句中的“Giving up our seats to the elderly”对应变为“to give up our seats to the elderly”,其中“the elderly”表示“老人”,“It is”缩写为“It’s”。
三、根据汉语提示完成句子。
31.对这些志愿者而言,通过志愿服务学会如何关心别人是很棒的。
________ ________ _________ _________ _________to learn to care for others through volunteering.
【答案】It’s wonderful for these volunteers
【详解】原句中“对这些志愿者而言,学会如何关心别人是很棒的”是关键词,表示“做某事对某人来说是……的”,用固定句型It’s+形容词+for sb+to do sth,“很棒的”对应的形容词是wonderful,表示“这些志愿者”的短语是these volunteers。
32.对社区而言,拥有一些志愿者是很有必要的。
________ ________ _________ _________ _________ to have some volunteers.
【答案】It’s necessary for the community
【详解】原句中“对社区而言,很有必要的”是关键词,此处考查固定句型“It is+adj.+for sb.+to do sth.”,意为“对某人来说做某事是……的”。其中it作形式主语,真正的主语是后面的动词不定式短语“to have some volunteers”,形容词necessary表示“必要的”,for the community意为“对社区而言”。
33.艾玛认为所有的组员们一起合作是非常有必要的。
Emma thought that ________ ________ ________ for all the team members ________ work together.
【答案】 it was necessary to
【详解】原句使用宾语从句,核心句型为it is+形容词+for sb. to do sth.“对某人来说做某事是……的”;主句时态为一般过去时thought,从句时态对应变为一般过去时,be动词用was;it作形式主语,necessary表示“有必要的”,to后接动词原形。
34.拥有健康的饮食习惯很重要。
________ ________ to have healthy eating habits.
【答案】 It’s important
【详解】固定句型“It is+形容词+to do sth.”,意为“做某事是……的”。在此句型中,It作形式主语,真正的主语是后面的动词不定式短语(to have healthy eating habits)。“重要”对应的英语形容词是important。be动词is需与It缩缩写为It’s。
35.所以,对农民来说,在春天和时间赛跑很重要。
So ________ ________ important for farmers to compete with time in spring.
【答案】 it is
【详解】原句中“对……来说做某事很重要”是关键词,表示“做某事对某人来说很重要”的句型是“It is important for sb. to do sth.”,其中it作形式主语,真正的主语是后面的动词不定式短语。
36.明智地选择如何花钱是很重要的。
________ ________ ________ ________ smart choices with our money.
【答案】 It’s important to make
【详解】原句缺少“……是很重要的”,可以用“it作为形式主语”的固定句型来表示,完整句型为It is+形容词+ (for sb.) to do sth.表示“(对某人来说)做某事是……的”,这里形容词用important,动词用make,make smart choices表示“做出明智的选择”。
37.在高峰时段与邻居拼车是个好主意。
It’s a great idea ________ ________ ________ ________ ________ ________during peak hours.
【答案】to share a ride with neighbours
【详解】原句中“与邻居拼车”是关键词,表示“与……拼车”的短语是share a ride with,本句为it作形式主语,需用动词不定式作主语,需补充不定式符号to;表示“邻居”的名词是neighbour,此处表示泛指的邻居,需用复数形式neighbours。
38.据说这座城市有一千年的历史。
________ ________ that this city has a history of 1,000 years.
【答案】 It’s said
【详解】原句中“据说”是关键词,对应固定句型“It is said…”,题干给出两空,It is缩写为It’s,句首单词首字母大写。
39.对我们来说,提前为自然灾害做准备是很有必要的。
It’s necessary for us to ________ ________ natural disasters in advance.
【答案】 prepare for
【详解】原句中“为……做准备”是关键词,对应的短语是prepare for。本句使用了句型It’s necessary for sb. to do sth.(对某人来说做某事是必要的),to后接动词原形,故填prepare;for。
40.他们的生活条件似乎不是很好。
________ ________ ________ their living conditions were not very good.
【答案】 It seemed that
【详解】原句“似乎”是关键词,对应的固定句型为It seemed that...,用来描述对事物的看法。句中“their living conditions were not very good”为从句,时态为一般过去时,主句需与从句时态保持一致,用一般过去时,故填It;seemed;that。
41.的确,阅读为我们打开一个全新的世界。
________ ________ that reading opens up a new world for us.
【答案】 It’s true
【详解】空格后的“that ...”是一个从句,说明阅读为我们打开全新世界这个事实,要用固定句型“It’s true that ...”表示“的确……”,其中it作形式主语,真正的主语是后面的从句。
42.中国队很容易就把领先优势扩大到2:0。
________ ________ ________ ________ China to extend its lead to 2-0.
【答案】 It was easy for
【详解】原句中“……很容易”是关键词,表示“……很容易”的句型是“It+be+形容词+for sb.+to do sth.”,句子为一般过去时,be动词用was。
43.对她来说,用自己的行动去影响身边更多同学是有意义的。
It is meaningful ________ her to use her actions to ________ more students around her.
【答案】 for influence
【详解】原句中第一空“对她来说”是关键词,表示“对……来说”的介词是for。第二空“影响”是关键词,用动词influence。本句为It is+adj.+for sb. to do sth.结构,故填for;influence。
44.他知道想要解决这个问题很难。
He knows that ________ ________ ________ ________ solve the problem.
【答案】 it is hard/difficult to
【详解】原句中“很难”是关键词,“it is hard/difficult to”符合语法要求,其中“it”作形式主语,“is difficult”作谓语,“to solve the problem”作真正的主语。
45.毫无疑问,他完全符合担任这项工作的条件。
________ ________ ________ ________ he is well qualified for the job.
【答案】 It is undoubted that
【详解】根据“he is well qualified for the job”可知此处应为that引导的主语从句,因此主语应是it作形式主语,位于句首,首字母要大写,句子采用一般现在时,谓语be动词应用is,“毫无疑问”应用形容词undoubted来作表语。故填It;is;undoubted;that。
46.难以置信,北京的秋天如此色彩丰富。
________ ________ ________ ________ the autumn in Beijing is so colorful.
【答案】 It is unbelievable that
【详解】通过对比中英文句子可知,英文句子缺少的内容是“难以置信”,核心词汇为unbelievable。句子设空四个,并且“...the autumn in Beijing is so colorful.”为完整的句子,采用一般现在时,可知本题为含有形容词unbelievable的主从复合句,句式“It is unbelievable that...”符合题意,意为“难以置信;难以置信的是”。其中,It为本句的形式主语,that引导的从句为本句的真正主语。故填It;is;unbelievable;that。
47.好像没有人喜欢汤姆。
________ ________ ________ nobody likes Tom.
【答案】 It seems that
【详解】“好像”seem,空后是完整的句子,所以此处要用到“It seems that+从句”的结构。故填It;seems;that。
48.________ ________ ________ ________(很遗憾) he missed the chance.
【答案】 It's a pity that
【详解】句意:真遗憾,他错过了这个机会。“很遗憾”在英文中表示为“It's a pity”,根据“he missed the chance.”可知此处是句子,所以此空缺主句,故填It's a pity that。
语法精讲
语法精练
21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 (共 2 页)/ 让教学更有效 高效备考 | 英语学科
Unit 2 Inspiring People单元语法精讲精练
“It is/was ... (for/of sb.) to do ...” 和“It is/was+形容词+ that从句”用法
句型一、It is/was ... (for/of sb.) to do ...的用法
1. 句型结构分析:
该句型中it是形式主语,无实际语义,指代后面的不定式短语,这样使用是为了避免主语过长导致句子头重脚轻。
句子中真正主语是动词不定式“to do ...”。
该句型中可以用for/of 来引出人物。
该句型中be动词通常用单数形式。
2. 句型的意义:
如果不用for/of 引出sb.,句型的意义为“做某事......(省略的部分用形容词,对不定式动作进行评价)”。
用for引出 sb.,这时句子侧重点是强调“事情”,重点不在人,这时形容词多是对“事情”进行评价的一些词,如:important, necessary, difficult, easy, hard, possible, impossible, dangerous等。
例:It is important for us to keep healthy.对我们来说,保持健康很重要。(重点在“保持健康这件事。)
It is difficult for him to finish the work today.对他而言,今天完成这项工作很难。
It is dangerous for children to swim alone.孩子独自游泳很危险。果用for sb.(重点在于评价“孩子独自游泳”这件事)
用of 引出sb.,这时句子侧重点是强调“人本身的品质/性格”,重点在评价人,这时形容词多是对“人”进行评价的一些词,如:kind, nice, good, polite, wise, clever, silly, stupid, careless, rude, wrong等。
例:It is kind of you to help me.你真好,帮我忙。(重点在评价人的品质)
It is stupid of him to believe such a lie.他真蠢,竟然相信这种谎话。(重点在评价人的品质)
It was careless of her to leave the door unlocked.她太粗心了,居然没锁门。(重点在评价人的性格)
3. 变否定
句子变否定时,直接把not放 to 前。
例:It is unnecessary for you to go there.你没必要去那儿。
句型二、It is/was+形容词+ that从句的用法
1. 句型结构分析:
该句型中it是形式主语,无实际语义,指代后面的that从句,这样使用是为了避免主语过长导致句子头重脚轻。
句子中真正主语是后面的that从句。
该句型中be动词通常用单数形式。
that是从属连词,只起“把从句绑进来”的作用,无实际意义。
2. 句型的意义:
该句型是对that从句表达的内容进行评价或说明,以为“...是...”
例:It is clear that he is lying.很明显,他在撒谎。
It is surprising that she got full marks.她拿了满分,真让人吃惊。
It is important that we follow the rules. 我们遵守规则很重要。
3. 变否定
变否定直接在is/was后加not。
例:It is not true that he stole the money.说他偷钱,这不是真的。
It wasn’t surprising that they lost.他们输了,并不让人意外。
4. 该句型中也可用for来引出句子描述的情况针对或适用的对象。
例:It is important for us that the plan works.计划能成功,这对我们很重要。
It is hard for him that he must leave. 他必须离开,这对他很艰难。
【拓展句型】
和以上两句型比较相似的句型有:
1. It takes … to do …
例:It takes time for beginners to speak English well.初学者要讲好英语需要时间。
2. It + be + 名词短语 + to do sth.
例:It is a pity to miss the concert.错过这场音乐会真是遗憾。
3. It + 不及物动词 + that从句
例:It happened that I met my old friend on the street yesterday.昨天我碰巧在街上遇到了我的老朋友。
4. It + be + 过去分词 + that从句
例:It is said that he has gone to Beijing.据说他已经去北京了。
5. It + be + 名词 + that从句
例: It is a pity that you can’t come to the party.你不能来参加聚会,真可惜。
一、单项选择。
1.It’s necessary ________ us ________ wash our hands before meals.
A.of; to B.for; to C.of; for D.for; for
2.It is important for teenagers ________ how to take care of themselves.
A.learn B.learning C.to learn D.learned
3.________ is dangerous ________ people to get close to hungry wild beasts.
A.That; for B.It; for C.This; of D.It; of
4.The doctors tell us that it is important ________ a healthy diet.
A.of us to have B.of us having C.for us to have D.for us having
5.It is important ________ us ________ learn to respect people with different abilities.
A.for; to B.of; to C.for; / D.of; /
6.—Was it wise ________ Li Ming ________ that decision
—I don’t think so.
A.of; making B.for; making C.of; to make
7.It’s not far away from school. ________ only takes me ten minutes to walk there.
A.This B.That C.I D.It
8._________ careless of you to make lots of mistakes.
A.That’s B.It’s C.It D.Is
9.— Was it necessary ________ Mike ________ some pictures before helping the old
— I think so. In this way, he could help himself later.
A.of; taking B.for; taking C.of; to take D.for; to take
10.It’s necessary ________ every day to keep healthy.
A.exercise B.exercising C.to exercise D.exercises
11.It ________ my father one hour ________ to his office every day.
A.spends; driving B.takes; to drive C.spends; to drive D.takes; driving
12.It ________ a big problem ________ many animals lose their homes.
A.is; that B.are; to C.is; to D.are; that
13.It’s amazing ________ we have built such a great project in a short time.
A.that B.which C.what D.how
14.It’s very likely ________ humans will land on Mars by the 2050s.
A.if B.that C.which
15.—It’s strange _______ there are no workers in the restaurant.
—Well, this is a self-service restaurant. People can order meals on the screen.
A.that B.whether C.if
16.It’s said ________ the biggest Lego theme park is being built in Shenzhen.
A.that B.which C.whether
17.—It seems ________ you like to work with children.
—Yes, they are so lovely.
A.that B.what C.to
18.—Do you know anything new about the 19th Asian Games
—It ________ that Wushu will be the first time that appears in the 19th Asian Games.
A.says B.said C.was said D.is said
19.________ that more than two thousand people die of the COVID-19. It makes us feel scared.
A.That said B.That’s said C.It’s said D.It said
20.It is a pity he lost his way in the forest and had to stay there for the whole night.
A.that B.when C.where D.who
二、按要求完成句子。
21.that, computers, is, super calculators, are, common knowledge, it (.) (连词成句)
___________________________________________________________________________
22.To our surprise, this 8-year-old boy came up with his own magic trick. (保持句意不变)
It is ________________________________________________________________________
23.it’s, that, no, love, secret, tea, Chinese (.) (连词成句)
______________________________________________________________________________
24.I haven’t seen that wonderful movie. What a pity! (合并为一句)
________ a pity ________ I haven’t seen that wonderful movie.
25.Someone said that a gym would be built in our school.(改为同义句)
_________ _________ _________ _________ a gym would be built in our school.
26.My host was nice enough to invite me to dinner. (改为同义句)
It was ________ ________ my host ________ ________ me to dinner.
27.To protect our earth is necessary.(it形式主语)
________ necessary ________ protect our earth.
28.To help endangered animals makes us happy. (把不定式作主语改成 it 形式主语)
___________________________________________________________________________
29.The workers are kind. They look after the elderly carefully.(合并为一句)
___________________________________________________________________________.
30.Giving up our seats to the elderly on the bus is right. (改为同义句)
________ ________ to give up our seats ________ ________ ________ on the bus.
三、根据汉语提示完成句子。
31.对这些志愿者而言,通过志愿服务学会如何关心别人是很棒的。
________ ________ _________ _________ _________to learn to care for others through volunteering.
32.对社区而言,拥有一些志愿者是很有必要的。
________ ________ _________ _________ _________ to have some volunteers.
33.艾玛认为所有的组员们一起合作是非常有必要的。
Emma thought that ________ ________ ________ for all the team members ________ work together.
34.拥有健康的饮食习惯很重要。
________ ________ to have healthy eating habits.
35.所以,对农民来说,在春天和时间赛跑很重要。
So ________ ________ important for farmers to compete with time in spring.
36.明智地选择如何花钱是很重要的。
________ ________ ________ ________ smart choices with our money.
37.在高峰时段与邻居拼车是个好主意。
It’s a great idea ________ ________ ________ ________ ________ ________during peak hours.
38.据说这座城市有一千年的历史。
________ ________ that this city has a history of 1,000 years.
39.对我们来说,提前为自然灾害做准备是很有必要的。
It’s necessary for us to ________ ________ natural disasters in advance.
40.他们的生活条件似乎不是很好。
________ ________ ________ their living conditions were not very good.
41.的确,阅读为我们打开一个全新的世界。
________ ________ that reading opens up a new world for us.
42.中国队很容易就把领先优势扩大到2:0。
________ ________ ________ ________ China to extend its lead to 2-0.
43.对她来说,用自己的行动去影响身边更多同学是有意义的。
It is meaningful ________ her to use her actions to ________ more students around her.
44.他知道想要解决这个问题很难。
He knows that ________ ________ ________ ________ solve the problem.
45.毫无疑问,他完全符合担任这项工作的条件。
________ ________ ________ ________ he is well qualified for the job.
46.难以置信,北京的秋天如此色彩丰富。
________ ________ ________ ________ the autumn in Beijing is so colorful.
47.好像没有人喜欢汤姆。
________ ________ ________ nobody likes Tom.
48.________ ________ ________ ________(很遗憾) he missed the chance.
语法精讲
语法精练
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