Unit5 Look into Science lesson25-27 讲义冀教版英语九年级全一册

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Unit5 Look into Science lesson25-27 讲义冀教版英语九年级全一册

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授课主题 九年级Unit5 Lesson25-27知识讲解练习
教学目的 掌握九年级Unit5 Lesson25-27重点单词、词组的用法; 掌握重点语法——定语从句。
重、难点 重点单词和词组的灵活运用; 理解并尝试运用定语从句。
教学内容
教师寄语:You can do anything you put your mind to. 世上无难事,只怕有心人。 例题解析 用方框中所给单词或短语的适当形式填空 (
experiment

upside

correct

fill...with

take...off
) 1.Can you answer the question ______ 2.We have done many ______ in science class. 3.Don't ______ your hand ______ the cardboard. 4.He ______ the bottle ______ water just now. 5.Never turn the box ______ down.It's dangerous. 本节知识点讲解 知识点1. experiment / k' sper m nt/ n.实验;试验 Many people are against _________ ____________on animals. 许多人不赞成在动物身上做实验。 “做实验”可用do/make/carry out an experiment表达。 Mr. Black is _________________________________ in physics. 布莱克先生正在做一个物理实验。 experiment v.做试验,进行实验,常和介词on,with连用。 He is experimenting_____frogs. 他正在青蛙身上做试验。 知识点2. turn...upside down 把……翻转;倒过来 知识点3. take…off… 把……从……拿开 Please ________your hand_______the food. 请把你的手从食物上拿开。 take off 脱掉,摘掉,(飞机)起飞 _______________________比尔摘掉了他的眼镜。 知识点4. get /ɡet/v.收到;(使)达到;变得 get作系动词,表示“变得”,后跟形容词作表语。 The weather will__________when autumn comes. 当秋天到来的时候,天气会变得凉爽。 get相关的短语: get along/on with…与……和睦相处 get away 离开,走开 get back 返回 get down 下来,写下 get on 上车 get off 下车 get together 会面,聚集 知识点5. That’s called…那被叫做…… 此句是一般现在时的被动语态,That在这句话中充当主语,is called 构成被动语态结构。一般现在时的被动语态的构成为:be动词(am/is/are)+动词的过去分词。 More money is ______(save)by using both sides of paper. 通过使用纸的两面,更多的钱被节省下来了。 知识点6. scientific adj.科学的 This is a _____________instrument. 这是一件科学仪器。 scientific还表示“细致严谨的”。 We need to be ______________________ about this problem. 在这个问题上我们需要更为严谨一些。 知识点7. be sure of 确信 I am sure of what he said. 我确信他所说的。 与sure有关的结构 be sure to do sth. 一定会做某事(一般指局外人的推测,主语可以是人,也可以是物) _________________________他一定会赢。be sure+ that从句 确信 He is sure that_____________________. 他确信他能成功。 make sure+that从句查明,弄清She looked around to______________________她往四下里看看,是不是只有她一个人。 for sure 无疑,肯定 He will be here____________within an hour. 他一小时之内肯定到这儿。
知识点8. over prep.在……上方,穿越 There was a lamp hanging________________ 有一盏灯吊在桌子上方。 辨析 above, over与on above只是笼统地表示“高于……,在……上方”,其反义词为below。 We were flying________the clouds. 我们在云层上面飞行。 over表示在某物体的正上方,与某物体垂直但不接触,其反义词为under。 There is a bridge________________. 河上有座桥。on表示在某物体的表面之上,与某物体表面接触。 He laid a hand ___________________ 他把一只手放在我的肩上。
知识点9. put on 穿上;戴上;上演 He _______ ___ his best clothes for the party. 为了聚会他穿上了他最好的衣服。 与put有关的短语: put up 挂上,张贴,建立,举起 It’s time we put up the Christmas decorations in the living room. 我们该在起居室里挂上圣诞装饰品了。 One minute later, a boy_____________________. 一分钟后,一个男孩举起了手。 put away把……收起,储存 The fruit should be ___________________ 水果应小心存放起来。 Please________________________ 请把你的书收起来。put out熄灭,扔掉 They managed to____________________ 他们设法把火扑灭了。put off 推迟,延迟Why don’t you________________? 你们为什么不推迟会议?
知识点10. force/f s/ n.力量 v.迫使;强迫 the force of_________大自然的力量 force作动词时,常用的句式为: force sb.to do sth.=force sb.into doing sth.意为“强迫某人做某事”。 They forced him to leave his country. 他们强迫他离开了他的国家。 =_________________________________________ 1.The plane will take off at 2:00 p.m.飞机将在下午两点起飞。 He ________ my wet coat and made me sit by the fire. A.went by   B.ran out C.took off D.turned up 2.We should think more of others if we want to ________them. A. get on well with    B. hear of C. get ready for D. hear from 3.—Claudia, are you going to Jeff's birthday party on Saturday —Unless I________. A. will be invited    B. am invited C. was inviting D. invited 4.It is sure ________ tomorrow morning. A.rain    B.to rain C.raining D.to be rained 5.The little child ________ the toys and went for dinner. A.put on   B.put up C.put off D.put away 知识点11. discover/d 'sk v (r)/ v.发现,发觉 Who discovered Hawaii 谁发现了夏威夷? 辨析 find, discover与invent find找到,侧重于找到过去丢失的人或物,但有时也表示凭经验或偶然发现了一种东西。 I _______________ my English book. 我找不到我的英语书了。 discover指“发现,找到”本已存在,但尚未被人类发现或认识的事物。Columbus _____________ America in 1492. 哥伦布于1492年发现了美洲。 invent指“发明,创造”出世界上本来不存在的东西。如工具、方法、手段等。 Mr. Smith__________a new teaching method.史密斯先生发明了一种新的教学方法。
知识点12. make observations 观察 While doing experiments, you must ________careful observations. 做实验时,你必须仔细观察。 make observations还可意为“作评论”。 Mr. Wang made some__________ ____________ on the Internet. 知识点13. keep /ki p/ v.保持 You should______ the room_________. 你应该保持房间清洁。 keep的用法: keep+ 宾语+形容词,意为“使……保持某种状态”You can’t sneeze and__________________ at the same time. 你不能在打喷嚏的同时让你的眼睛睁着。 keep sb. from doing sth. 阻止某人做某事,相当于“stop/prevent sb.from doing sth.”。We should____________________________alone in the sea. 我们应该阻止孩子们单独在海里游泳。 keep (on) doing sth. 继续,重复做某事。 _________ __________! 保持微笑!
知识点14. match/m t / n.火柴,比赛 v.相称,相配 We need to light a__________. 我们需要点一根火柴。 They beat us last time, but we hope to win_______________________. 上次他们打败了我们,但我们希望赢得下次的比赛。 The picture____________the story. 这幅图和故事相配。 match作名词时,为可数名词,复数为matches。 Don’t strike matches if you smell gas.如果你闻到煤气味,就不要划火柴。 知识点15. half/hɑ f/ adj.一半的 n.半; 一半 Given half a chance, he will succeed. 只须给他一点儿机会,他就会成功。 half 意为“一半的”,作形容词。half an/a +名词,意为“半个……”。 _______________ 半个小时 half________半天 half______ apple 半个苹果 half of…意为“一半的……”,后接名词时,一般要在名词前加the、形容词性物主代词或指示代词等。此结构作主语时谓语动词和of后的名词保持一致。 知识点16. light v. 点燃 Will you________the fire for me, please 请为我把火点燃,行吗? light的其他用法: 作名词时,为“光线,电灯”。作“光线”讲时为不可数名词,作“电灯”讲时为可数名词。 ______________was beginning to fail.天色渐暗。 Don’t forget to turn off the lights when you leave. 当你离开的时候不要忘了关灯。 作形容词时,意为“浅色的,轻的”。 Rose likes the_______ ________skirt.罗丝喜欢那条浅绿色的短裙。 You can carry this bag. It’s__________________.你可以拿这个包。它很轻。 知识点17. until/ n't l/ conj.直到……为止 I’m going to stay here until Saturday and start on Sunday. 我打算在这里____________________,然后星期日出发。 用于肯定句中,主句的谓语动词一般是延续性的。 用于否定句中,主句的谓语动词一般是非延续性的。 I did________ ________ the work until he came back. 直到他回来我才开始这项工作。 知识点18. as / z/ conj.当……时;随着 adv.如同 prep.作为; 如同 as可作连词,意为“随着,当……时”。 ______time went by, the environment got worse and worse. 随着时间的推移,环境变得越来越糟了。 辨析while, when while 表示“在……的时候,在……期间”。它强调主句的动作与从句的动作同时发生或主句的动作发生在从句动作进行的过程中。while从句中的谓语动词必须是延续性动词。 when表示“当……的时候”。从句中的谓语动词既可用延续性动词,又可用非延续性动词,这些动词既可以表示动作,又可以表示状态。 也就是既可以指较短的时间(即某一具体时间),也可以指一段时间。主句和从句的动作可以同时发生,也可以先后发生。
知识点19. stop/st p/ v.停止 They stop_______________to music.他们停止听音乐。 辨析stop doing sth.与stop to do sth. stop doing sth.停止正在做的事,doing sth.作宾语。 stop to do sth停下(正在做的事)去做另一件事,to do sth.作目的状语。
Stop ________, please.请停止说话。 They stop ____________. 他们停下来说话。 stop sb.(from) doing sth.阻止某人做某事。 We stop the boys (from)__________ the tree. 我们阻止男孩们爬树。 知识点20. use up用完,用光 He has________ ____all his money. 他已经用光了他所有的钱。 与up有关的短语: ①cut up 切碎 ________________________.他把肉切碎了。 ②eat up吃完 Eat up your lunch.吃完你的午饭。 ③give up放弃 Don’t _________________and you will succeed. 别放弃,你会成功的。 知识点21. how far多远 用于询问两地间的距离,答语也要用表示距离的句子。 —____________is it to your house from here —It is about 5 minutes’ walk. ——从这儿到你家有多远? ——大约步行5分钟的路程。 和how搭配的疑问短语还有: how much 询问价格以及不可数名词的数量。How much is the meat?肉多少钱? How much _____________________?你想要多少水? how many询问可数名词的数量。____________________have you collected? 你已经收集多少张邮票了? how old 询问年龄。—How old is your sister? 你妹妹多大了? —She is seventeen. 她十七了。how long 询问多长时间或物体的长度。 —____________do you spend on your homework? 你花多长时间在你的家庭作业上? —Only an hour.仅仅一个小时。how often 询问某种行为或动作发生的频率。—How often do you visit your parents? 你多久去看望一次你父母? —__________________.一周一次。 how soon 询问多久以后。 —How soon will the play start? 这部戏剧将什么时候开始? —______ ten minutes.十分钟后。
知识点22. one fifth 五分之一 分数的表达形式:分子用基数 词表示,分母用序数词表示,当分子大于1时要把分母加s。注意:分数作主语时,谓语动词的单复数形式取决于其后的名词。 There are two hundred teachers in our school and_______ __________ of them are women teachers. 我们学校有200名教师,四分之三是女教师。 ______ ___________of the students are boys in our class. 我们班三分之二的学生是男孩。 ______ _________of the area is under water. 三分之一的面积在水下。 知识点23. in front of 在……的前面 There is a big tree________________________ 在教室的前面有一棵大树。 1.Half of the books ________ for students. A.is     B.are C.am D.was 2.I didn’t go to bed ________ my mother came back home last night. A.since  B.until  C.when 3.You look tired. You’d better ________ a good rest. A.stop to have    B.stop having C.to stop to have D.to stop having 4.Clean Plate Campaign(光盘行动) calls on Chinese people to ________ all the food each meal. A.eat up  B.use up C.pick up D.cut up 5.—________is it from the village to your farm — About 10 minutes’ walk. A.How often B.How soon C.How long D.How far 6.About ________ of the students like keeping diaries in English in our class. A.two fifth    B.two fifths C.second five D.two five 知识点24. would like 想…… would like 之后必须跟带to 的动词不定式或者名词。would like 不等于like, like之后可以跟动词的 ing形式或者动词不定式。 He’d like ________________outside. 他想在外面工作。 He likes____________/working outside. 他喜欢在外面工作。 would like 没有人称和数的变化。变为一般疑问句时,把would提前。 I’d like to ____________ the park.我想打扫公园。 _____________________to clean up the park 你想打扫公园吗? would like后面可以用动词不定式作宾语补足语。 What would you like me to do 你想要我做什么? I’d like you_______ ________my parents, too. 我也想让你见见我的父母。 知识点25. look through从……中看,透过……看去 He _________________ the hole.他透过洞看。 与look有关的短语: ①look out当心,留神 __________________! There is a car coming. 当心!有一辆小汽车来了。 ②look over 检查,查看 Would you mind __________________my exercises?你介意检查一下我的练习题吗? ③look after照顾 I can_______________________. 我能照顾我自己。 ④ look up查阅;向上看 Look up the word in the dictionary. 在词典中查查这个单词。 知识点26. turn...around使……翻过来;翻转 Please___________________________. 请把书翻过来。 turn around 转身 Turn around and let me look at your back. 转过身去让我看看你的背。 与turn有关的短语: ①turn in 上交,交还 You must ____________________________ today.今天你必须交你的家庭作业。 ②turn to求助于 We can’t solve the problem, so __________________.我们解决不了这个问题,因此求助于你。 ③turn off关掉(电流、煤气、水等) Turn off the TV when you don’t watch it.当你不看电视时,把它关掉。 ④turn on打开,接通(电流、煤气、水等) It’s time for the news. Please____________________ the TV. 到新闻的时间了。请打开电视。 ⑤turn up开大(音量) I can’t hear it clearly. Turn it up. 我听不清。声音开大点儿。 ⑥turn down调小(音量) It’s too noisy. Turn it down.太吵了。声音调小点儿。 知识点27. join/d n/ v.参加 Tom wants to_______ the basketball team. 汤姆想加入篮球队。 辨析 join,join in与take part in join指成为某个团体、组织中的一员。 What have you done since you______Greener China? 自从加入绿色中国组织你干了什么事? join in/ take part in指参与某项活动He often joins in/ ________________ school activities. 他经常参加学校的活动。
知识点28. unless/ n'les/ conj.除非 I won’t go to the party_________________________. 除非被邀请,否则我不会去参加聚会的。 unless是连词,意为“如果不,除非”,引导条件状语从句,相当于“if…not…”。 I’ll go for a picnic unless it _______(rain) tomorrow. 如果明天不下雨,我将去野餐。 知识点29. worth/w θ/ adj.值得 The idea is worth___________________________.这个想法值得考虑。 worth常用的结构为: ①be worth+n. The book is worth 5 dollars.这本书值5美元。 ②be worth doing sth. The book __________________________.这本书很值得一读。 知识点30. amazing/ 'me z / adj.令人惊叹的 Do you hear the _________ news 你听说这个令人惊叹的消息了吗? 辨析 amazing与amazed It was___________ that he knew nothing about the event.他对这个事件毫不知情,真令人诧异。 What an________ painting!多么令人惊奇的一幅画啊! We were______________ that he agreed so quickly.我们很惊奇他那么快就答应了。 知识点31. belong to 属于 Does this house ___________________ Mr. Smith 这座房子是史密斯先生的吗? belong to当“属于”讲时,无被动语态和进行时态,后接名词或代词。 The car____________________ me.这辆车是我的。 Which group___________________________ 他属于哪一组? 知识点32. billions of 数十亿计的 The cost reached ________________________.费用达到了数十亿美元。 billion前加基数词,表示“几十亿”, billion要用单数形式。 billion与of连用,表 示“数十亿计的”时,billion要用复数形式。 类似的词还有:hundred,thousand,million。 He earned two _________dollars last year.去年他挣了20亿美元。 There are billions ______people in the world.世界上有几十亿人。 1.Would you like ________ and watch the football match with me A.to go    B.go C.going D.went 2.Again and again the doctor ________ the crying baby girl,but he couldn't find out what was wrong with her. A.looked over   B.looked after C.looked for D.looked out 3.It’s getting dark. Please ________ the light. A.turn on   B.turn off C.turn down D.turn around 4.They will lose the game ________ they try their best. A.unless   B.once C.since D.after 5.________fans would like to go to Brazil to watch the World Cup. A.Million of   B.Millions of C.Millions 巩固练习 用所给词的适当形式填空。 1.Danny    (conclude)that the smell was stronger than he thought. 2.His sudden death    (turn)her world upside down. 3.We can use a     (science)method to prove who’s right. 4.The monkey kept    (jump)for five minutes. 5.Li Nan is tall enough    (reach)the pears. 6.Please put a jar upside down over a    (burn)candle. 7.Are you    (interest)in listening to music 8.Be    (care)of the fire. 9.Her mother stops him    (go)out at night. 10. Of all the students,Tony works     (care). 当堂检测 一、选词(组)填空。 1.Don’t    (use up/push up)all of the ink.Leave some for me. 2.The medical team    (is made of/is made up of)five experienced doctors. 3.Please fill the hole    (with/in)sand and water. 4.They didn’t realize their mistake    (until/as)we told them. 5.My brother wasn’t    (strong enough/enough strong)to lift the box. 二、单项填空。 1.I fill a jar    water.And I cover the top    a piece of cardboard. A.with,with  B.use,use C.with,use  D.use,with 2.Let’s do the experiment and see    will happen. A.what  B.when  C.how  D.where 3.I will    them the theory. A.say  B.speak  C.talk  D.tell 4.The water in the river    after it rained. A.rise  B.raise  C.raised  D.rose 5.You needn’t keep the candle    .It’s bright enough here. A.burn  B.to burn  C.burning  D.burned 6.    of the land in the district    covered with trees and grass. A.Two fifths,is  B.Two fifth,are C.Two fifth,is  D.Two fifths,are 7.I used    my money.Can you lend me some A.in  B.out  C.up  D.on 8.You should keep the candle    .It is dark. A.burning  B.to burn  C.burned  D.burn 9.Look out!The box is    glasses. A.full of  B.fill with C.full with  D.filled of 10.    you told me,I had heard nothing of what happened. A.Until  B.Though  C.When   D.If 课堂总结 家庭作业 一、用方框中所给词的适当形式填空。 other,try,my,big,amaze 1.Why do you think science is     2.Nothing happened,though he    his best. 3.Your apple is much    than my apple. 4.I have two friends.One is in Class Four,and the    is in Class Five. 5.This coat is blue,but    is black. 二、句型转换。 1.The camera must be Mike’s.(同义句转换) The camera must         Mike. 2.If you don’t go for it,your dream won’t come true.(同义句转换) Your dream    come true    you go for it. 3.He decided to join an English club.(同义句转换) He         to join an English club. 4.I hope I can pass the exam.(改为简单句) I         pass the exam. 5.I would like to have a cup of coffee.(同义句转换) I             a cup of coffee. 三、单项填空。 1.I don’t like Xiao Shenyang’s performances    many people like them. A.as if  B.as for C.so that  D.even if 2.—Have you seen the TV play“My Ugly Mother” —Yes,its’s well worth    .It’s    moving that I’ve seen it twice. A.seeing,too  B.seeing,so C.to see,enough  D.to seeing,so 3.The moonlight shone on the piano    the window. A.across  B.cross  C.over  D.through 4.In spring,the grass    of the ground slowly.It looks shy. A.comes in  B.comes on C.comes out  D.come out 5.—We can’t be successful    we keep working hard. —I agree with you. A.if  B.unless  C.because  D.when

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