2020年春人教新目标英语九年级英语unit9单元知识点总结与练习(无答案)
2020年春人教新目标英语九年级英语Unit 9一、知识点1.prefer v.更喜爱，更喜欢，相当于like……better，其过去式、过去分词为preferred，常用于以下结构：(1)prefer+名词、代词I preferred music. Which do you prefer?(2)prefer+动词不定式“宁愿干……”She prefers to live among the working people.(3) prefer+v-ing I prefer living abroad.(4)prefer+动词不定式复合结构:常见的搭配有:①prefer……to……喜欢……而不喜欢……（to为介词）She prefers apples to bananas.②prefer doing to doing（to为介词）He prefers running to walking.③prefer to do …… rather than do sth.宁愿干……而不愿干……They prefer to play games rather than watch TV.2.gentle: ①轻柔，温和（往往指音乐、嗓音或风）②温柔的，文雅的（往往指人的性格）3.remind……of……使某人回想起或意识到某人、某事She reminded me of her sister.The pictures remind me of my school days.4.表示“也”的用法：also 用在句中，too 用在句末，as well 多用于口语，用在句末，这三个表达都用在肯定句。
either “也” 用在否定句尾5. What do you think of …? =How do you like…?6.as 的用法：①用作连词“按照”Please do it again as I told you.②连词，当……的时候，着重强调两个动词同时发生She sang as she worked.③表示原因，“因为，由于”比较口语化，语气也较弱，所表示的原因比较明显。
As I didn’t know the way, I asked the policeman.④as…as… 和……一样7.over the years多年来，往往与现在完成时连用8.though 不做副词“可是，不过，然而”放在句尾9. be sure of +n. / pron. /短语be sure that 从句｝相信，对……有把握be sure to do 务必……一定……make sure 确保，核实，查收，弄清楚10.one of the+最高级+复数名词，最……之一11.过去分词作定语，表示被动或完成12. on display=on show13.interest:①n.兴趣，趣味；②v.使感兴趣He interested me in football.他使我对足球感兴趣。
I’ve got a lot of books that might interest you.我有许多可能使你感兴趣的书。
14.class 等级，级别，阶级15. whatever=no matter what16.suggest:①建议，后跟宾语从句，用虚拟语气；②表示，暗示，后跟宾语从句，不用虚拟语气。
17. energy (n.)=energetic (adj.)18.honest 该词是元音发音开头，前面的不定冠词用“an”.19.先行词若为地点或时间时，后面的关系词用关系代词还是关系副词，要看关系词在定语从句中作什么成分。
若关系词作定语从句的主语、宾语或定语，用关系代词；若关系词作状语，则用关系副词。
20. along with 伴随… 同… 一道I will go along with you. 我同你一道去。
I sing along with music. 我伴随着音乐唱歌。
21. dance to sth. 随着…跳舞She likes dancing to the music. 她喜欢随着音乐而跳舞。
22. different kinds of 各种各样different kinds of clothes 各种各样的衣服23. music n. 音乐musician n. 音乐家musical24. take … to … 带…去…. 如：My father often takes me to the park. 我的爸爸经常带我去公园。
Please take this box to my office. 请拿这个盒子到我的办公室。
25. be important to sb. 对…重要be important for sb. to do. 做某事对某人很重要26. though == although 作连词虽然，尽管放在句子中间/句首，不能和but 连用Though it was very late, he went on working. 虽然很晚了，但他还在工作Mr. Smith , though he was young, did it very well.史密斯先生虽然年轻，却做得很好。
27.energy n. 活力energetic adj. 有活力的28. most of … …的大多数29. keep healthy 保持健康30. get together 聚在一起31. be bad for sth. 对…有坏处的be bad for doing sth. 做…有坏处32. take care of === look after 照顾关心如：She often takes care of / looks after her son.33 stay away from 远离… 如：Stay away from me , I have a cold. 请远离我，我得了感冒34. to be honest 老实说如：To be honest I really like flowers. 老实说我真的很喜欢花。
35. dislike 不喜欢反义词like 喜欢36. fisherman 渔夫复数形式fishermen37. photography n. 摄影photograph n. 照片相片photographer n. 摄影师38. be in agreement 意见一致常与介词on /about连用如：They are in agreement on that question. 他们对那个问题意见一致。
39. mainly adv. 主要地首要地main adj. 主要的二.短语1.expect to do sth.期望干……expect sb. to do sth期望某人干……2.catch up with追上，赶上3.different kinds of music各种不同的音乐4.quiet and gentle songs轻柔的歌曲5. take…to… 带……到……6. remind…of…使某人想起或意识到……7.her own songs她自己的歌曲8.be important to对……重要9.Yellow River黄河10.Hong Tao’s latest movie洪涛最近的电影11.over the years多年来12.be sure to do sth.务必干……一定干……13.one of the best known Chinese photographers世界上最有名的中国摄影家之一14.on display展览，展出e and go来来往往16.can’t stand不能忍受17.look for寻找18.feel sick感到恶心，不舒服19.have a great time玩得高兴，过得愉快20.to be honest说实话21.be lucky to do幸运的是……22.my six-month English course我6个月的英语课23.most of my friends我的大部分朋友24.go for去找某人，想法得到某事物25.stay healthy保持健康26.French fries薯条27.stay away from与……保持距离28.be in agreement意见一致（后跟短语、句子）29.barbecued meat烤肉30.a tag question反意疑问句31.be bad for对……有害三．句子1.I love singers who write their own music.我喜欢自己创作曲子的歌手。
2.We prefer music that has great lyrics.我们更喜欢歌词很棒的曲子。
3.What do you dislike about this CD.你不喜欢这张CD的什么？4.What does it remind you of？它使你想起了什么？5.The music reminds me of Brazilian dance music.这首曲子使我想起了巴西舞曲。
6.It does have a few good features, though.然而，它的确也有一些好的方面。
7.She really has something for everyone.每个人的确都能从她的作品中领悟到一些东西。
8.Whatever you do, don’t miss this exhibition.无论怎样，你都不能错过这次展出。
9.As the name suggests, the band has a lot of energy.正如乐队名字所暗示的那样，这支乐队很有活力。
10. Some people say they are boring, but others say they are great.11.If I were you, I’d eat nuts instead.如果我是你，我会改吃坚果。
九年级英语Unit 9练习试题一、单项选择( )1. I want to find some music that I can dance______。
A. withB. toC. alongD. from( )2. The restaurant across from our school has good service and the food there_______delicious.A. looksB. soundsC. tastesD. feels( )3. I still can't understand this-English article______I've read it three times.A. so thatB. ifC. becauseD. even if( )4. --Joe, let's go to the movies.--No. I prefer______ to the library because I can find books that I need.A. to goB. goC. to goingD. goes( )5. Jerry is a boy _______likes pop music very much.A. 不填B. whomC. thatD. which( )6. As the leader of the company, Mike can' t expect ______ a day without working.A. spendingB. to spendC. spendD. to spending( )7. Emma comes from Australia, but she does______ Chinese well.A. speakB. speaksC. speakingD. spoke( )8. Don't worry. Your uncle is sure______you later.A. callsB. calledC. to callD. calling( )9. --You look upset, Bob. What happened?--I made ______ mistakes in the English exam.A. fewB. a fewC. littleD. a little( )10. I ______ a letter from one of my pen pals in America recently.A. will receiveB. receiveC. would receiveD. received( )11. I'm going to an exhibition. It's said that many pictures are____.A. on vacationB. on dutyC. on displayD. on board( )12. Though my grandfather is over 80, he is very healthy and has lots of____.A. adviceB. subjectsC. answersD. energy( )13. The little boy has too many toys and this one can't_____ him as much.. A. remind B. interest C. encourage D. help( )14. Don't eat too many candies! They are too_____ and bad for your teeth.A. sweetB. largeC. hotD. dirty( )15. --What do you think of the rock music?--It's so noisy.______. I prefer music that is gentle and quiet.A. I don't careB. I've no ideaC. I can' t stand itD. I don't think so二、完形填空先通读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案，并将其序号填入题前括号内Whitney was a bit shy．There was a time when she had few 16 ．So when it was time for her to go to high school，Whitney was quite 17 ．She was going to live with someone she didn’t know in a town 300 miles away18 home．She had no idea how to make friends in this new envi ronment．However，somethi ng happened a nd it changed Whitney’s 19 ．In her first English class，the teacher asked the students to talk about 20 ．And the final 21 for each student was“What is your goal(目标)for this class?”．Most ofthe students said it was to get good grades，pass the exams or something like that，22 Whitney said that her goal was to make iust one good friend．It was quite 23 ．While most of the students sat in silence，one student came to Whitney，held out his hand and 24 himself．He asked if she would be his friend．All of the students looked at Whitney．She smiled and took his hand．Later，the boy 25 Whitney’sbest friend．That day，Whitney learned the power(力量)of asking for what she wanted，being honest and taking action(采取行动)．( )16．A. experiences B.lessons C．friends D.problems( )17．A．busy B．nervous C．excited D．serious( )18．A．in B．at C．for D．from( )19．A．habit B．life C．hobby D．dream( )20．A．himself B．herself C．themselves D．ourselves( )21．A．question B．result C．class D．reason( )22．A．and B．or C．but D．so( )23．A．easy B．difficult C．same D．different( )24．A．called B．told C．introduced D．enjoyed( )25．A．became B．knew C.liked D．chose三、阅读理解阅读下面四篇语言材料，然后按文后要求做题。
人教版新目标九年级全册英语 Unit 9 知识点总结复习提纲
人教版新目标九年级全册英语Unit 9 知识点总结复习提纲Unit 9 I like music that I can dance to.Section Adance to music 随着音乐跳舞sing along with music 随着音乐唱歌electronic music 电子音乐smooth music 悦耳的音乐have spare time 有空in that case 既然那样；假使那样的话World War II 第二次世界大战feel like doing sth. 想要做某事stick to 坚持；固守cheer sb. up 使某人高兴起来funny dialogs 滑稽好笑的对话have a happy ending 有一个美满的结局plenty of information 大量信息action movies 动作片shut off my brain 屏蔽我的大脑save the world in time 及时拯救世界once in a while 偶尔地；间或scary movies 恐怖片Section Bin total 总共；总计take sb. to a concert 带某人去听音乐会Chinese folk music 中国民间音乐under the beauty 在美的背后sense a strong sadness and pain 感受到一种强烈的悲伤和痛苦one of the most moving pieces of music 最感人的曲子之一cry along with ... 随着……哭泣look up the history of ... 查阅……的历史a folk musician 一位民间音乐家be born in the city of ... 出生在……市teach sb. to do sth. 教某人做某事play many musical instruments 演奏许多乐器by age 17 17岁前musical ability 音乐天赋develop a serious illness 患了一种严重的病become blind 眼睛瞎了play music to make money 以演奏音乐为生get married 结婚continue to do sth. 继续做某事perform in this way 以这种方式表演amazing musical skills 惊人的音乐技巧during his lifetime 在他的有生之年by the end of his life 到他临终前one of China’s national treasures 中国国宝之一paint a picture of Abing’s own life 描绘阿炳自己的生活touch the hearts of people 触动人们的心灵praise sb. as ... 称赞某人为……【重点句型】1. I love singers who write their own music. 我喜欢自己创作曲子的歌手。
人教版新目标九年级英语Unit9知识点及练习
A neither; nor B either; or C not only; but also D not; but 15. ---I will go to the countryside to see my grandmother this afternoon, so I can ’t go swimming with you.
17. I ’m sleepy. I prefer_____at home to going out for a walk. A sleeping B to sleep C slept D sleep 18. --What a heavy rain!
--So it is. I prefer ____rather than_____on such a rainy day. A to go out ; stay at home B to stay at home ; go out
----________. A It ’s my pleasure B You ’re welcome 16. ----Which is your new neighbor, Liu Hua?
C That ’s a pity
D Sure, I am
----The man_____T-shirt is red. A that B who C which D whose
D offers; with
5. I think the first lesson_____we are learning is very easy. A that B where C who D when
6. --What are you doing ? ---I ’m reading the book ______you lent me last week.
(完整版)新版新目标英语九年级unit9知识点总结.docx
Unit9 I like music that I can dance to.1.prefer v 更喜；更喜 ;宁愿 = like...better 在分 preferring、去式 preferred prefer sb/sth 更喜某人或某物prefer to do sth 宁愿做某事，更喜做某事prefer doing A to doing B宁愿做A而不愿做Bprefer sb to do sth宁愿某人做某事prefer A to B喜A而不喜B to 是介He prefers apples to bananas. prefer to do A+ rather than + do B 宁愿做 A 而不愿做 B=would rather do A than do B prefer sb to do sth 宁愿某人做某事2. dance to 随着⋯ ..跳舞to 介按照，随着sing to和着...唱歌The children danced to the music of the band.the music that can dance to 能跟着跳舞的音3. along with=together with 伴随着sing along with 跟着一起唱4.play different kind of music 演奏不同种的音5.spare adj 空的，不用的 spare time=free time 空in one’s spare time 在某人的空里have spare time有空v 抽出，空出房等spare sb time 某人出6. in that case 即使那的，既然那in this case 如果 (的 )in case of 要是 ...,在 ...的候in case 万一 , 以防 , 免得，in any case 无如何 ,不管怎 =whatever happenssuch being the case既然如此 ,情况既然是in no case不in nine case out of ten 十有八九，大体上7.feel like doing sth 感想做某事8.stick v n.棍,棒,手杖1)持后加言，点，原，划，定等的名stick to doing sth 持做某事2)粘，附着于 ;将..刺入stick a fork into a potato 把叉子叉土豆stick sth on sth3)不移开，不偏离，不离4)跟，随；留在⋯附近Stick to me, or you'll get lost.跟着我走，不然你会迷路的。
人教版九年级全一册英语Unit9单元语法知识点总结
人教版九年级全一册英语Unit9单元语法知识点总结本单元重点短语的具体用法1. dance to (music)：随着（音乐）跳舞- The children danced to the music at the party.（孩子们在派对上随着音乐跳舞。
）2. sing along with：随着...一起唱- I like to sing along with the radio.（我喜欢随着收音机一起唱歌。
）3. musicians who play different kinds of music：弹奏不同类型音乐的音乐家- The band has musicians who play different kinds of music, including pop and jazz.（这个乐队有弹奏不同类型音乐的音乐家，包括流行音乐和爵士乐。
）4. electronic music：电子音乐- Electronic music is becoming more and more popular.（电子音乐越来越受欢迎。
）5. not much：没什么（事）- - How are you? - Not much.（- 你好吗？- 没什么事。
）6. suppose sb to do sth.：猜想某人做某事- I suppose him to be a doctor.（我猜他是个医生。
）7. be supposed to do sth：应该做某事- You are supposed to hand in your homework on time.（你应该按时交作业。
）8. suppose sb (to be) + adj.：原以为...- I supposed her to be honest, but I was wrong.（我原以为她是诚实的，但我错了。
）9. have spare time：有空闲时间- I don't have much spare time these days.（我最近没有太多空闲时间。
2020年春人教新目标英语九年级英语unit9 单元知识点归纳总结与练习(无答案)
2020年春人教新目标英语九年级英语Unit 9单元知识点归纳总结与练习一、知识点1.prefer v.更喜爱，更喜欢，相当于like……better，其过去式、过去分词为preferred，常用于以下结构：(1)prefer+名词、代词I preferred music. Which do you prefer?(2)prefer+动词不定式“宁愿干……”She prefers to live among the working people.(3) prefer+v-ing I prefer living abroad.(4)prefer+动词不定式复合结构:常见的搭配有:①prefer……to……喜欢……而不喜欢……（to为介词）She prefers apples to bananas.②prefer doing to doing（to为介词）He prefers running to walking.③prefer to do …… rather than do sth.宁愿干……而不愿干……They prefer to play games rather than watch TV.2.gentle: ①轻柔，温和（往往指音乐、嗓音或风）②温柔的，文雅的（往往指人的性格）3.remind……of……使某人回想起或意识到某人、某事She reminded me of her sister.The pictures remind me of my school days.4.表示“也”的用法：also 用在句中，too 用在句末，as well 多用于口语，用在句末，这三个表达都用在肯定句。
either “也” 用在否定句尾5. What do you think of …? =How do you like…?6.as 的用法：①用作连词“按照”Please do it again as I told you.②连词，当……的时候，着重强调两个动词同时发生She sang as she worked.③表示原因，“因为，由于”比较口语化，语气也较弱，所表示的原因比较明显。
人教新目标版九年级全册英语知识点Unit 9
人教新目标版九年级全册英语知识点Unit 9 I like music that I can dance to Section A1.prefer过去式/过去分词preferred后+doing/to doprefer A to B与B相比，更喜欢Aeg: I prefer yogurt to milk.prefer to do sth. rather than do sth.=would rather do sth. than do sth.eg:I prefer to take a train rather than fly there.= I would rather take a train than fly there.2.along with随着，和……一起主语连用时，谓语动词的单复数与前边的主语保持一致eg: Linda's parents along with her want to go to Sanya for a holiday.3.dance to和着……跳舞eg: Everybody is dancing to the music.4.supposev. 推断；料想be supposed to do sth.应该做某事否定前置后跟宾语从句时（主语为第一人称）eg：I don't suppose you'll like the movie.5.spareadj.空闲的；不用的v.抽出；留出句型in one's spare time在某人的业余时间里=in one's free timespare some time for sb.为某人留出一些时间6.in that case既然那样case短语in case of 如果...in any case 无论如何in case 以防万一in this case 在这种情况下7.stick to坚持；固守后+n./pron./V.ingv.粘贴,将……刺入过去式/过去分词：stuckeg：The two stamps have stuck together.n.棍棒,树枝等eg: He picked up some sticks to make a fire.8.plenty of大量；充足＝lots of辨析plenty of接可数不可数皆可a number of接可数名词复数an amount of接不可数名词9.mindv.介意mind (one's) doing sth.介意某人做某事。
(完整版)人教版新目标英语九年级Unit9单元知识点小结
Unit 9 I like music that I can dance to1.dance to music 跟着音乐起舞2.sing along with 跟着一同唱3.musicians who play different kinds of music弹奏不一样种类音乐的音乐家4.electronic music 电子音乐5.not much=nothing much 没什么（事）6.suppose sb. to do sth. 猜想某人做某事be supposed to do sth. 应当做某事suppose sb (to be) +adj. 原认为7.have spare time 有安闲时间in one's spare time 在某人的安闲时间spare the time to do sth. 抽时间做8.think too much 想得太多；过分思虑9 in that case 既然那样10.World War II 第二次世界大战11.smooth music 动听的音乐12.prefer A to B 比起 B 来更喜爱 Aprefer doing A to doing B愿意去做 A 而不是去做 Bprefer to do A rather than do B情愿做 A 而不做 B13.feel like doing sth. 想要做某事 =wantto do sth. =would like to do sth.14.stick to 坚持，固守15.be down 悲痛，丧气16.cheer sb up 使快乐/振奋17. have a happy ending有个美满的结局18.less serious 不那么严重19.a good way to do sth. 做某事的好方法20.shut off 封闭21.in time 实时on time 准时 /准时22.once in a while 有时的；有时=sometimes /at times23. write one's own lyrics自己写歌词短语概括24.take sb to sp. 带某人去某地25.Chinese folk music 中公民间音乐26.be played on the erhu 由二胡演奏的27.move sb. 感人某人（sb. be moved by sth.）28.strangely beautiful异样的/出奇的美29.sense a strong sadness and pain感觉到一种激烈的伤感和难过30.the most moving pieces of music最令人感人的乐曲31.the city of Shantou = Shantou city 汕头市32.by age 17 到十七岁的时候33.musical ability 音乐才能34.develop a serious illness 得了一种很重的病35.become blind 成了盲人；变瞎36.make money 赚钱37.get married (to sb.) （和某人）成婚38.continue to do sth. 连续去做某事（另一件事）continue doing sth. 连续做着某事（同一件事）39. perform in this way用这类形式表演40. during/ in one's lifetime在某人有生之年41.by the end of ... 到末为止（时间）at the end of ... 在终点/末梢（时间、地址）42.It's a pity that ... 遗憾的是43.in total 总合44.be recorded for the future world to hear被记录下来供后代倾听45.praise ... for ... 因为赞叹46.China's national treasures 中国的国家瑰宝47.paint a picture of ... 描述了一幅画48.recall one's deepest wounds唤起某人最深的伤痛49.painful experiences 难过的经历50. a time for spreading joy流传快乐的时间句子重难点分析1. Hmm, depends which movie.嗯,那要看是哪部电影了。
新目标英语九年级Unit 9 知识要点归纳初中英语知识点
新目标英语九年级Unit 9 知识要点归纳初中英语知识点编者序新目标英语九年级Unit 9 知识要点归纳初中英语知识点知识点总结是本知识店铺精心收集编制而成，希望同学们下载后，能够帮助同学解决实际问题。
文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢!前言下载提示：主要整合了以下内容知识点典型例题及知识点,学霸揭秘,中考高考各科最容易提分的冷技巧,来帮你提分,新目标英语九年级Unit 9 知识要点归纳初中英语知识点希望对您有所帮助。
Download tips: It mainly integrates the following contentknowledge points, typical examples and knowledge points, the secrets of learning masters, the cold skills that are the easiest to score points in each subject of the high school entrance examination and college entrance examination, to help You mention points, 新目标英语九年级Unit 9 知识要点归纳初中英语知识点 hope to help you.【重点词组或短语】1. sing along with 跟着……一起唱2. play different kinds of music 演奏不同种类的音乐3. have spare time 有空闲时间4. in that case 如果那样的话5. feel like doing sth. 感觉想做某事6. stick to坚持，固守7. have a happy ending 有一个快乐的结局8. seem less serious 似乎不严重9. plenty of 大量，充足10. shut off 关闭11. once in a while 偶尔，间或12. write their own lyrics 自己作词13. sing the words clearly 唱词清楚14. Chinese folk music 中国民俗音乐15. sense a strong sadness and pain 感觉到一种强烈的悲伤与痛苦16. look up 查阅17. in total 总计18. China’s national treasures 中国的民族瑰宝19. spread joy 传播快乐20. do an excellent job 表现优异21. play the hero 扮演英雄人物22. during his lifetime 在他生前【重难点句子】1. I like smooth music that helps me relax after a long week at work.我喜欢那种能在一周的上班之后帮我放松的悦耳的音乐。
2020年春人教新目标英语九年级英语unit9-知识点分析与练习(无答案)
2020年春人教新目标英语九年级英语Unit9 I like music that I can dance to 知识点一、重点短语：1. sing along with 跟着一起唱2. the music that can dance to 能跟着跳舞的音乐3. play different kind of music 演奏不同种类的音乐4. a long week at work 一周长时间的上班5. have spare time 有空闲时间6. in that case 如果那样的话7. what kind of 哪种8. stick to 坚持，固守9. prefer A to B 比起B 更喜欢A10. prefer doing sth. to doing sth.比起做某事更喜欢做某事11. prefer to do sth 更喜欢做某事12. prefer to do sth rather than do sth.宁愿做某事也不愿做某事13. have a happy ending 有一个快乐的结局14. seem less serious 似乎不严重15. plenty of 大量，充足二、重点句子：讲一讲1（section A ）1. A ：What kind of music do you like? ---你喜欢什么样的音乐？B ：I like music that I can sing along with. ---我喜欢能随着唱的音乐。
A ：What kind of music do you like? ---你喜欢什么样的音乐？B ：I like music that I can dance to . ---我喜欢能随着一起跳舞的音乐。
A ：What kind of food do you enjoy ? ---你喜欢什么样的食物？B ：I enjoy food that is sweet ---我喜欢甜的食物。
人教版新目标英语九年级Unit 9知识点
九年级复习Unit 11 Could you please tell me where the restrooms are?86－87页 1. make a telephone call call /phone sb give sb. a call/ring ring sb. up 打电话2. go past the bank 经过银行go past = pass; past 是介词，意为“经过，路过”3. between … and … 在……之间；close to 在附近；on the left / right side在左/右边；in the middle of 在……的中间；in front of 在……的前面；be opposite to 在……对面；across from 在……对面；next to 贴近，靠近88页 1. a lot of = lots of 后加可数名词复数(相当于many)也可加不可数名词(相当于much)类似的还有：plenty of ★a lot 非常修饰动词Thanks a lot.2. decide to do sth. 决定做某事make a decision to do sth. 下决心做某事decide + that 从句3. talk to / with sb. 与某人交谈talk about sb. / sth. 谈论某人或某事4.There’s always something happening. 总有某些事情发生。
该句中，现在分词happening 表示伴随，用来修饰something。
happen 一词只有主动形式，不能用于被动。
5. It’s also just fun to watch people. 观察人是很有趣的。
It’s + adj. + (for sb.) + to do sth. (对于某人来说，做某事是……的) it是形式主语，真正的主语是to do sth. 句型中的for sb.常根据需要省略。