资源简介 / 让学习更有效 新课备课备考 | 英语学科/ 让学习更有效 新课备课备考 | 英语学科2025年鲁教版(五四学制)九年级全册英语精讲精练Unit 2 Teenagers should be allowed to choose their own clothes核心语法:动名词作主语一、核心概念动名词(Gerund) 是动词的 -ing 形式(如 swimming, reading),具有名词性质,在句中可作主语、宾语等。动名词作主语 表示泛指或习惯性的动作。二、基本结构动名词(短语) + 谓语动词(单数) + 其他Swimming is good for health.(游泳对健康有益)Learning English takes time.(学习英语需要时间)三、使用场景表示日常活动或习惯Getting up early makes you energetic.(早起使人精力充沛)表达普遍真理Seeing is believing.(眼见为实)描述抽象概念Finding a good job isn't easy.(找到好工作不容易)四、特殊句型It is + adj. + 动名词(it作形式主语)It's useless arguing about it.(争论这个没用)There is no + 动名词There's no joking about safety.(安全问题上不能开玩笑)五、动名词作主语 vs. 不定式作主语动名词作主语 不定式作主语强调一般性、经常性动作 强调具体、未来性动作Reading books is fun. To read this book is my goal.注:动名词更自然,口语中更常用不定式更正式,多用于书面语六、易错点提醒谓语动词用单数(重点!) Playing sports are healthy. → Playing sports is healthy.动名词与现在分词的区别动名词作主语:Swimming is fun.(游泳这件事)现在分词作谓语:She is swimming now.(正在进行的动作)七、记忆口诀"动名词,-ing,作主语时记分明;泛指习惯常用它,谓语单数要记清;不定式,更具体,动名词,更通性!"1. sports is one of the most popular activities for children.A.Play B.Played C.Playing D.Plays2.— Eric, ________ more fruit and vegetables is good for your health.—Yes. After all, an apple a day keeps the doctor ________.A.eating; out B.eat; on C.eat; down D.eating; away3.________ is bad for your health.A.Staying up B.Stay up C.Staying in4.—_______ heads means No in China but Yes in India.—Sounds interesting.A.Shaking B.Moving C.Hitting D.Washing5.At anytime, ________ the truth is the most important thing.A.told B.tell C.tells D.telling6.________ information about children’s health is his job.A.Collect B.Collected C.Collects D.Collecting7.Eating junk food ________ your health.A.is good for B.is bad for C.are good for D.are bad for8._______ exercise every day is good for our health.A.Do B.To doing C.Doing D.We do9.I think ________ with my classmates can improve my English.A.discuss B.discussing C.to discuss D.discussed10.I think doing eye exercises ________ everyone.A.is good at B.is good forC.are good at D.are good for11._______ the salad in the fridge for a while can make it_______ nicer.A.Keeping; taste B.To keep; to tasteC.Keep; taste D.Keeping; to taste12.Listening to tapes ________ help you improve your listening skills.A.did B.do C.does D.done13.____ early is a good habit .A.To getting up B.Get up C.Getting up D.Got up14. a writer for her school newspaper is a dream for Jenny.A.Be; comes true B.Being; came true C.Being; come true15.________ morning exercises ________ good for us.A.Do; is B.Doing; are C.Doing; is16.Lucy thinks that ______ English movies isn’t a good way.A.watch B.watched C.watching D.watches17.Doing ________ every day _________ me very healthy.A.sports, makes B.sport, make C.sport, made D.sports, making18._________ computer games too long is not good for teenagers.A.Play B.To playing C.Playing D.Played19.________ is not simple at all.A.Fishing B.Fish C.Fishes D.Catch fish20.—Which activity do you find the most relaxing —I think ________ is very relaxing.A.listen to music B.listening to music C.to listen to music D.listened to music21.________ apples are good for you.A.Eat B.Eating C.To eating D.Ate22.______ a foreign language well takes a long time. You should be patient enough.A.Learning B.To learning C.Learn D.Learnt23.________ books every day ________ fun. It also helps me learn about the world.A.Read; is B.Read; are C.Reading; is D.Reading; are24.Drums and pianos are the same in some ways because ________ makes their sounds.A.blowing B.taking C.hitting25._________ stamps together must be fun!A.Collect B.Collects C.Collected D.Collecting26.________ time with positive people ________ me stay positive.A.Spending; helps B.Spending; help C.Spend; helps27.Our English teacher often says to us,“____ English well is very important.”A.Learn B.LearningC.Learned D.To learning28.—What’s your advice for learning English —________ English songs is a good way.A.Listening B.Listening to C.To listen D.To listen to29.________ good neighbours makes our life more pleasant. We should get along well with them.A.Have B.Having C.Had D.To having30.Drawing pictures ________ for me.A.are a great fun B.are great fun C.does a great fun D.is great fun31. Chinese gardens in summer is a wonderful idea.A.Visiting B.Visits C.Visited D.Visit32. is good for our health.A.Walk B.Walks C.Walking D.Walked33.I think ________ after supper is good for your health.A.walking B.walkC.walks D.walked34.No ______ means you mustn't smoke here.A.smoke B.smokesC.smoking D.smoked35.My mother says ________ a glass of milk every day is good for our health.A.drink B.drunk C.drinks D.drinking36.________ a new machine is very difficult.A.Invent B.Invention C.Inventing D.Invents37.______ the goldfish ______ is bad for it.A.Feed; much B.Feeding; many C.Feed; many D.Feeding; much38.________ rabbits ________ is bad for them.A.Feed; too many B.Feeding; too muchC.Feeding; much too D.Feed; many too39.It’s no use ________ too much because they don’t listen carefully at all!A.to talk B.talking C.talk D.told40.________ is my favorite hobby. It can make me ________.A.Listen to music, relaxed B.Listening to music, relaxedC.To listen to music, relaxing D.Listens to music, relaxing41.Don’t you think ________ a pet ________ much time A.walk;spends B.walking;takes C.walk;costs D.walking;spends42. ________ honest is the first thing people should learn.A.Being B.Look C.Be D.Become43._________ play football in the street. ________ football in the street is dangerous.A.Don’t; Playing B.Not; PlayingC.Don’t; Play D.Not to; To play44.________ is good for our health.A.Eat too much sugar B.Eating too much sugar C.Play sports D.Playing sports45. the Internet brings me lots of fun.A.Surfing B.SurfsC.To surfing D.Surf46.________ the salad in the fridge for a while can make it ________ nicer.A.Keeping; taste B.To keep; to taste C.Keeping; tastes D.Keeping; to taste47.Walking a dog ________ good for your health.A.was B.were C.are D.is48.Walking to school is slower than _________ a bus.A.take B.to take C.taking D.taken49.________ a dog is a good idea at home while children are growing up.A.Feeding B.Feed C.Keeping D.Keep50.__________ from the junior high school means a lot to me.A.Graduate B.GraduatingC.Graduated D.Graduates51._______shelter and food for _______animals is very important and necessary.A.Providing; endanger B.Provide; endangerC.Providing; endangered D.Provide; endangered52.________ books every day ________ fun. It also helps me learn more about the world.A.Read; is B.Read; are C.Reading; is D.Reading; are53.________ a diary is a good way ________ your English.A.To write; of improving B.Keep; improveC.Keeping; to improve D.Writing; improve54.Mike thinks that ________ love and joy everywhere is the true spirit of Christmas indeed.A.finding B.losing C.spreading D.getting55.--I think it interesting _____________ hiking on such a cool day.--Yes, you are right. ____________ around the city is also a good choice.A.to go; Riding B.going; Ride C.to go; Ride D.going; To ride56._____ the environment is important for human beings.A.Take care of B.Taking care of C.Took care of D.Take the care of57.________ is good for our health.A.Doing exercise B.Do exercise C.Does exercise D.Did exercise58.Doing eye exercises ________ one of the useful ways to protect our eyes.A.is B.are C.were59.____ vegetable juice is a good habit, which helps you eat a balanced diet.A.Drink B.Drank C.Drunk D.Drinking60.________ the train means waiting for another hour.A.Miss B.Missed C.Missing D.To missing61.一Can ________lies make your friends happy sometimes 一Yes.Sometimes it is better________a white lie than______someone a painful(痛苦的)truth.A.telling;to tell;telling B.tell;to tell;to tellC.telling;to tell;to tell D.tell;tell;tell62.________ can help us learn ________ about the world.A.Reading; a lot of B.Read; lots of C.Read; a lot D.Reading; a lot63.I think a car to take a trip is very convenient.A.to driving B.driving C.drive D.drives64.________ vegetables and fruit ________ good for us.A.Eat; is B.Eating; are C.Has; is D.Eating; is65.________ is the best way to keep a good relationship with your parents, teachers and other people around you.A.Active communicating B.Actively communicatingC.Actively communication D.Active communicate/ 让学习更有效 新课备课备考 | 英语学科/ 让学习更有效 新课备课备考 | 英语学科21世纪教育网(www.21cnjy.com)21世纪教育网(www.21cnjy.com)参考答案及试题解析1.C【解析】句意:做运动对孩子来说是最受欢迎的活动之一。本题考查动名词短语做主语。分析句子可知,缺少主语;动词短语play sports做主语,要改为动名词短语,故选C。2.D【解析】句意:——埃里克,多吃水果和蔬菜对你的健康有好处。——是的。毕竟,一天一苹果,医生远离我。考查非谓语动词和固定短语。第一空:分析句子结构可知,此处缺少主语,动词原形不能作主语,动名词可以作主语,所以第一空应填“eating”;第二空:固定短语keep...away表示“使……远离”,keep...out表示“阻止……进入”。根据“an apple a day keeps the doctor...”可知,此处表达的是“医生远离”,应用away。故选D。3.A【解析】句意:熬夜对你的身体不好。考查非谓语动词。动词作句子主语时,需用doing或to do。stay up熬夜;stay in待在家。根据“is bad for your health.”可知应该是熬夜。故选A。4.A【解析】句意:—— 摇头在中国表示“NO”,但是在印度表示“YES”。——听起来很有趣。考查动名词和固定搭配。A.摇晃;B.移动;C.撞击;D.清洗。根据shake head意为摇头;此处使用动名词作主语。根据句意可知,此空是摇头的意思,此空故填Shaking,故选A。5.D【解析】句意:在任何时候,说实话是最重要的。考查非谓语动词。分析句子结构,“is”前面缺少主语,所以空格在句中作的是主语,故用动名词作主语,故选D。6.D【解析】句意:收集关于孩子们健康的信息是他的工作。考查非谓语动词。分析句子可知这里是动词做主语,用to do或doing形式。故选D7.B【解析】句意:吃垃圾食品对你的健康有害。考查形容词辨析和主谓一致。good好的;bad坏的。根据“junk food”可知垃圾食品对健康是不好的,排除AC选项;主语是动名词短语,谓语动词用单数,故选B。8.C【解析】句意:每天做运动对我们的健康有好处。考查非谓语。空处作主语,且句中有动词“is”,此处应用动名词形式,故选C。9.B【解析】句意:我认为和我的同学们讨论可以提高我的英语水平。考查非谓语形式。根据“I think ... with my classmates can improve my English.”可知,本句是宾语从句,从句缺少主语,因此用动名词作主语,即用discussing。故选B。10.B【解析】句意:我认为做眼保健操对每个人都有好处。考查形容词短语和动名词作主语。be good at擅长;be good for对……有好处。根据句意可知,做眼保健操对每个人都有好处,排除A、C选项。动名词短语“doing eye exercises”作主语,用作第三人称单数,be动词用is。故选B。11.A【解析】试题分析:句意:把沙拉放在冰箱里一会儿可以使它更美味。前空是动词短语作主语,用不定式或动名词形式;后空:使某人做某事:make sb. do sth.(用省to的不定式作宾语补足语)。故选A。12.C【解析】句意:听磁带确实有助于提高你的听力技能。考查助动词。强调谓语动词时应在动词的前面加助动词,句子陈述事实,应用一般现在时;且动名词短语Listening to tapes作主语,谓语动词用单数形式。故选C。13.C【解析】句意:早起是一个好习惯。根据动词做句子的主语时,用to do 或doing形式,to do一般指具体的某一次,doing通常指经常性的;Get up动词原形,Getting up 动名词,Got up过去式;故选C。14.C【解析】句意:珍妮想成为校报的一名作者终于梦想成真了。考查非谓语动词。分析句子结构,第一空作主语,应用不定式或动名词,排除A选项;第二空是短语“a dream come true”表示“梦想成真”,动作已完成,应用过去分词作定语,故选C。15.C【解析】句意:做早操对我们有好处。考查非谓语动词和主谓一致。根据“...morning exercises...good for us.”及选项可知,do morning exercises意为“做早操”,在本句中作主语,应该用动名词形式;动名词作主语,系动词应该用第三人称单数。故选C。16.C【解析】句意:露西认为看英语电影不是一个好方法。考查非谓语动词。watch动词原形;watched过去式;watching动名词;watches第三人称单数。分析句子可知,句中缺少主语,用动名词作主语。故选C。17.A【解析】句意:每天做运动使我非常健康。考查动词短语和时态。do sports做运动;do sport无此用法。根据“Doing…every day…me very healthy.”可知,本题考查短语“做运动”do sports;“使某人……”make sb+adj;“Doing sports”是动名词短语,在句中作主语,谓语动词需用单数形式。根据“every day”可知,本句的时态是一般现在时,make的单数形式是makes。故选A。18.C【解析】句意:玩电脑游戏太久对青少年不好。考查动名词作主语。根据句子结构可知,应用动名词 “Playing” 作主语。故选C。19.A【解析】句意:钓鱼一点也不简单。考查非谓语动词。分析句子结构可知,此空在句中作主语,应填动名词,故选A。20.B【解析】句意:——你觉得哪种活动最放松?——我认为听音乐很放松。考查动名词作主语。listen to music“听音乐”,动词短语;再根据“I think ... is very relaxing.”可知,此处是作主语,应用动名词。故选B。21.B【解析】句意:吃苹果对你有好处。考查非谓语动词作主语。此处需用动名词(-ing形式)作主语,表示泛指的行为。故选B。22.A【解析】句意:学好一门外语要花很长时间。你应该足够地有耐心。选项中learn为实义动词“学习”,A项为动名词形式;B选项为错误表达;C项为动词原形;D项为过去分词形式。分析题干可知谓语动词使用单数形式,结合选项故应使用动名词短语作主语,故选A。23.C【解析】句意:每天读书是很有趣的。它也帮助我了解世界。考查动名词和主谓一致。Read阅读,动词原形;is是,主语为第三人称单数;Reading阅读,动名词;are是,主语为you或复数名词。分析句子结构可知,第一空要填动名词作主语,用作第三人称单数,所以第二空要填“is”。故选C。24.C【解析】句意:鼓和钢琴在某些方面是相同的,因为击打会发出声音。考查名词辨析。blowing吹;taking带走;hitting击打。根据“Drums and pianos are the same in some ways because … makes their sounds”可知,鼓和钢琴通过击打都会发出声音,故选C。25.D【解析】句意:一起集邮一定很有趣!考查非谓语。空处作句子主语,应用名词或动名词形式,故选D。26.A【解析】句意:与积极的人共度时光帮助我保持积极。考查动名词作主语和主谓一致。句中缺少主语,动名词“Spending”作主语,谓语用单数“helps”。故选A。27.B【分析】【解析】句意:我们的英语老师经常对我们说,“学好英语非常重要。”考查非谓语动词。根据句子结构,此空在句中作主语,所以用动名词作主语,故选B。28.B【解析】句意:——你对学习英语有什么建议?——听英语歌曲是一个好方法。考查动名词。listen to songs“听歌”,此处需用动名词作主语,故选B。29.B【解析】句意:拥有好邻居让我们的生活更加愉快。我们应该和他们友好相处。考查动名词作主语。根据“...good neighbours makes our life more pleasant”可知,此处用动名词作主语。故选B。30.D【解析】句意:画画对我来说很有趣。考查主谓一致。动名词作主语,谓语动词用单数形式,fun“乐趣”为不可数名词,与be动词连用时表示某事是有趣的,前面不加不定冠词。故选D。31.A【解析】句意:在夏天参观中国园林是一个好主意。此处作主语,故用动名词短语,故为visiting Chinese gardens in summer,故选A。32.C【解析】句意:走路对于我们的健康有好处。A. Walk走,原形;B. Walks走,第三人称单数;C. Walking走,现在分词;D. Walked走,过去式。这里是动名词做主语,本题考查非谓语动词。此处作主语,应用动名词。根据题意,故选C。33.A【解析】句意:我认为晚饭后散步有利于你的健康。考查动名词作主语。分析句子结构可知,句子为含宾语从句的复合句;根据“after supper is good for your health”可知,从句缺少主语,应用动名词walking作主语。故选A。34.C【解析】句意:禁止吸烟意味着你不可以在这里吸烟。smoke吸烟,是动词原形;smokes是第三人称单数,smoking是动名词,smoked是过去式。有形容词no修饰,故用动名词,故选C。35.D【解析】句意:我妈妈说每天喝一杯牛奶对我们的健康有好处。考查非谓语动词。该句为宾语从句,从句缺主语,故应用动名词短语作主语,故选D。36.C【解析】句意:发明一台新机器是非常困难的。考查非谓语动词。根据be动词is可知,此处是作主语,应用invent的动名词形式inventing,故选C。37.D【解析】句意:喂金鱼太多对它有害。much很多的,修饰不可数名词;many很多的,修饰可数名词;此处作主语,故用动名词短语,故排除AC两项。表示喂金鱼的食物,因此是不可数名词,故用much。故选D。38.B【解析】句意:给兔子喂太多(食物)对它们不好。考查动名词作主语和词义辨析。too many太多的,修饰可数名词复数;too much太多的,作代词或副词,修饰不可数名词;much too太……;many too无此用法。根据句意可知,动词“feed”要用动名词形式构成动名词短语“feeding rabbits”作主语;第二个空缺处应用“太多”表程度修饰主语。故选B。39.B【解析】句意:说太多也没用,因为他们根本就不认真听!考查非谓语动词。It’s no use doing sth“做某事没用”,故选B。40.B【解析】句意:听音乐是我最喜欢的爱好。它可以让我放松。考查非谓语动词和形容词辨析。分析句子可知第一空缺主语,要用动名词,或动词不定式;表示“人放松”要用ed结尾形容词,ing结尾形容词常用于修饰“物”的性质,故选B。41.B【解析】句意:你不觉得遛宠物花太多时间了吗?考查动名词短语作主语和动词辨析。walk遛(狗),动词原形;walking遛(狗),动名词;spends花费(时间或金钱),主语是人;takes花费(时间),主语是物;costs花费(金钱)。分析句子结构,可知动词think后接省略引导词that的宾语从句,从句主语应用动词walk的动名词walking充当;根据“much time”可知此处表示“花费时间”,从句主语是物,应用动词take来表示。故选B。42.A【解析】句意:人们应该首先学会诚实。考查动名词的用法。分析句子可知,此句缺少主语,动名词放于句首作主语。故选A。43.A【解析】句意:不要在街上踢足球。在街上踢足球是危险的。考查祈使句的否定形式和动名词作主语。第一句为祈使句的否定形式,表示“不要……”,结构应为“Don’t+动词原形+其他成分”,故第一空为Don’t;第二空缺主语,应用动名词作主语,表示在街上踢足球这件事。故选A。44.D【解析】句意:运动对我们的健康有益。考查动名词作主语。分析句子结构可知,这里需用动名词短语作主语,排除A/C;选项B是吃太多糖,这对身体没有好处;D项最符合题意。故选D。45.A【解析】句意:上网给我带来许多快乐。这句的谓语动词是brings,surf是动词,动词短语不能作主语,故排除BD;应该用doing(表示经常的行为)或to do(表示一次性具体的某种行为)。故排除C;故选A。46.A【解析】句意:把沙拉在冰箱里放一会儿可以使它尝起来更美味。考查非谓语。此句缺少主语,应该用动名词作主语;make sth/sb do sth是固定搭配,意为“使某物/人做某事”,第二空填动词原形。故选A。47.D【解析】句意:遛狗对你的健康有益。考查主谓一致和时态。根据题干可知,说的是事实情况,应该用一般现在时,主语是动名词短语,谓语动词用单数is。故选D。48.C【解析】句意:走着去上学不坐公交车去上学慢。考查动名词的用法。因为主语是动名词短语Walking to school,因此表语也用动名词,故选C。49.C【解析】句意:孩子在成长中,家里养宠物狗是个好主意。考查非谓语动词和动词辨析。feed喂养;keep饲养。根据“a dog is a good idea”可知,此处指饲养狗,keep a dog “饲养狗”,此处作主语用动名词keeping。故选C。50.B【解析】句意:初中毕业对我意味着很多。考查动名词。此处是做主语,故用动名词短语,故为graduating。故选B。51.C【解析】句意:为濒危动物提供住所和食物是非常重要和必要的。考查动名词和形容词辨析。Endanger:vt.危及,使遭受危险;endangered:adj. 濒危的。动名词作主语,形容词修饰名词,结合句意和语境可知选C。52.C【解析】句意:每天读书是很有趣的。它也帮助我更多地了解这个世界。考查动名词和主谓一致。Read阅读,动词原形;is是,主语为第三人称单数;Reading阅读,动名词;are是,主语为you或复数名词。分析句子结构可知,第一空要填动名词作主语,用作第三人称单数,所以第二空要填“is”。故选C。53.C【解析】句意:记日记是改善你英语的一个好方法。考查动名词做主语和动词不定式的用法。根据谓语动词“is”可知,前面的词是作为主语,结合选项可知,可以使用动词不定式和动名词做主语,所以排除选项B;根据“a good way to do sth.”“做某事的好方法”可知,应该使用动词不定式。故选C。54.C【解析】句意:迈克认为到处传播爱和欢乐的确是圣诞节的真正精神。考查动名词词义辨析。finding发现;losing失去;spreading传播;getting获得。根据“love and joy”可知,传播爱和欢乐,故选C。55.A【解析】句意:——我认为在这样一个凉爽的天气里去徒步旅行非常有趣。——是的,你说的对。在城市周围骑自行车也是一个好的选择。第一空根据句型think it +形容词+to do sth“认为做某事是…….”,用动词不定式to go。第二空作主语,故用动名词,故为riding。故选A。56.B【解析】试题分析:句意:对于人类来说,关心环境是很重要的。在这个句子中,动名词短语做主语,系动词be用单数。故答案选B。考点:考查动名词的用法57.A【解析】句意:做运动有益于我们的健康。考查动名词作主语。Doing exercise做运动,动名词;Do exercise做运动,动词原形;Does exercise做运动,动词三单;Did exercise做运动,过去式。根据“...is good for our health.”可知本句缺少主语,动名词可作主语。故选A。58.A【解析】句意:做眼保健操是保护眼睛的有效方法之一。考查be动词。此处是动名词短语“Doing eye exercises”作主语,因此动词用单数;且此处表示客观事实,为一般现在时,因此用is。故选A。59.D【解析】句意:喝蔬菜汁是一个好习惯,会帮助你均衡饮食。考查动名词。A. Drink动词原形;B. Drank动词过去式;C. Drunk动词过去分词;D. Drinking动名词/动词现在分词。分析句子成分可知,此处用动名词放在句首作主语,故选D。60.C【解析】句意:错过这趟火车意味着再等一个小时。考查非谓语动词。根据“means”可知此处应用动名词作主语。故选C。61.C【解析】句意:——有时撒谎能让你的朋友高兴吗?——是的。有时候善意的谎言比告诉某人一个痛苦的真相更好。第一空作主语,故用动名词短语telling lies。根据句型It is better to do sth“做某事更好”,故第二空用动词不定式to tell a white lie。than前后比较,than前面是动词不定式,故than后面是动词不定式to tell someone a painful truth,故选C。62.D【解析】句意:阅读能帮我们了解很多有关世界的情况。考查动名词作主语和词汇辨析。句子中已有谓语动词“can help”,第一空需要一个非谓语动词作主语,所以排除B、C选项。a lot of/lots of表示“许多”,两者都修饰名词,a lot很,非常,副词或作代词,表示很多,由learn可知,空处需用代词作宾语,learn a lot 意为“了解很多”。故选D。63.B【解析】句意:我认为开车去旅行非常方便。考查非谓语动词。分析句子结构可知,think后面是宾语从句,从句是动名词作主语,谓语动词用单数形式,所以该空用driving。故选B。64.D【解析】句意:吃蔬菜和水果对我们有好处。考查动名词作主语及主谓一致。根据“...vegetables and fruit...good for us.”可知,“...vegetables and fruit”作句子的主语,第一空应用动名词形式eating,因此排除选项A和C;单个动名词作主语时,谓语动词应用第三人称单数形式,所以第二空应是is。故选D。65.B【解析】句意:积极的交流是与你的父母、老师以及周围其他人保持良好关系的最好的方法。考查非谓语动词作主语。首先动词作主语时要用动名词,故排除C和D;其次修饰动词用副词。此空故填Actively communicating,故排除A,故选B。21世纪教育网(www.21cnjy.com)21世纪教育网(www.21cnjy.com) 展开更多...... 收起↑ 资源预览