初中英语从句知识点总结归纳

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1、宾语从句一 定义：宾语从句是指在一种句子中充当宾语的句子 如：He said that he wanted to be a teacher when he grew up.二 宾语从句有三种类型： 1由附属连词that引导的宾语从句表达陈述意义，连词that常可被省略。例如：I hope (that) they will have fun. Mary said that she felt sleepy. Cant you see (that) Im a bird?注意：（1）当主句的谓语动词是think,believe等时，宾语从句尽管要表达否认意义，却不用否认形式，而将think等动词变为否

2、认形式。如：I dont think he will come.我觉得她不会来。（2）两个表达陈述意义的宾语从句并列时，有时省去第一种从句的连词that，但第二个从句的连词that一般不可以省略。如：He told me (that)they could not decide what to do and that they asked my advice. 2.由附属连词if或whether引导的宾语从句表达“与否（有，能，已经）”等一般疑问句的含义。例如：I wonder whether (if) he lives here.3.由连接代词who,whom,whose,what,which

3、和连接副词when,where,how,why等引导的宾语从句表达“谁，谁的，什么，哪（个，些），何时，何地，如何，为什么”等等特殊疑问句的意义。除了连接词及被修饰的词提前以外，宾语从句用陈述句语序。例如：To masked who could give the message to her mother.Do you know what he said just now? I wondered how old his brother was. 三.宾语从句的时态呼应：“主现则从任，主过则从过，客观真理一般现”1当主句是目前时或将来时的时候，宾语从句可以用所需要的任何时态。2主句是过去时，宾语

4、从句一般只能用过去时的某种形式；当从句论述的是客观事实或一般真理时，宾语从句仍然用目前时态。3情态动词must一般不用于过去时，但却可以用于主句是过去时的宾语从句中。四.宾语从句的语序1 宾语从句的连接词后加陈述语序（主语在前，谓语在后）如：I want to know if he can come tomorrow2 当连接词自身又是宾语从句的主语时，背面直接加谓语动词如：She asked me who had helped him状语从句英语中,修饰动词、形容词、副词等的句子成分叫状语。状语的功用：状语阐明地点、时间、因素、目的、成果、条件、方向、限度、方式和随着状况等，根据状语的功能状

5、语从句可分为：时间状语从句、因素状语从句、目的状语从句、成果状语从句、条件状语从句。一时间状语从句：在一种句子中作时间状语的句子。时间状语的连接词：when（当时候） while（当时候） as（当时候） after（在后来） before（在此前） as soon as（一就） since（自从到目前） till /until（直到才） by the time（到为止）仍旧是连接词后加陈述语序。1. when 当的时候（一般状况下：主将从现）I will become a teacher when I grow up2. while 当时He visited a lot of places

6、while he was traveling.3. as 在的同步；一边一边He smiled as he stood up.4. after 在之后He left the classroom after he had finished his homework the other day.5. before 在之前Mr. Brown had worked in a bank for a year before he came here.6. as soon as 一就(一般状况下：主将从现)We began to work as soon as we got there.I will wri

7、te to you as soon as I get home.7. since 自以来 到目前表达自过去的一种起点时间到目前(说话时间)为止的一段持续时间。主句一般用目前完毕时，从句用一般过去时。Mr Green has taught in that school since he came to China three years ago. (还可以用作介词，本句从句还可以用短语：since three years ago(自三年前以来)表达。)8 till /until 直到都可以作连词，连接时间状语，也可以作介词，与其他词构成介词短语，在句中作状语。They walked till /

8、until it was dark.Xiao Ming didnt leave home till / until his father came back. 9. by the time 到为止 (所在句子的主句应用目前或过去完毕时)By the time he gets there , his father has already gone.By the time I got to school, the class had already began.用法辨析：1.when, while和as的区别When 引导的从句的谓语动词可以是延续性的动词，又可以是瞬时动词。并且when有时表达“

9、就在那时”。例如： When she came in, I stopped eating. 她进来时，我在吃饭。(瞬时动词) When I lived in the countryside, I used to carry some water for him.当的住在农村时，我常常为她担水。（延续性的动词） We were about to leave when he came in. 我们就要离开，就在那时她进来了。 While 引导的从句的谓语动作必须是延续性的，并强调主句和从句的动作同步发生（或者相相应）。并且while有时还可以表达对比。例如： While my wife was r

10、eading the newspaper, I was watching TV. I like playing football while you like playing basketball.我喜欢踢足球，而你喜欢打篮球。（对比） As 表达“一边一边”，as引导的动作是延续性的动作，一般用于主句和从句动作同步发生；as也可以强调“一先一后。例如： We always sing as we walk. 我们总是边走边唱。（as表达“一边一边”） As we was going out, it began to snow. 当我们出门时，开始下雪了。（as强调句中两个动作紧接着先后发生，而

11、不强调开始下雪的特定期间） as when while都表达主、从句动作同步发生，三者差别如下：as表达“一边。一边的意思when 1、还可以表达从句动词的动作在主几句动词的动作之前 或之后发生。2、whenand then; at that moment (正在那个时候)3.常用于常用搭配中while 1、 用于时间较长时2、 强调两个动作同步进行，并表达对比时有时这三个连词可以互换，有时不可以。lt was raining hard when (as) I got there.我到那里时，正在下大雨。 ( 动作同步发生，when可换为as, 但不能换为while，由于get是点动词.)Wh

12、en I had read the article, he called me.我看完这篇文章之后，她给我打了电话。( 从句动作发生在主句之前，注意时态体现，只能用when )When I got to the cinema, the film had begun.(当)我到了电影院时，电影已经开演了。(从句的动作发生在主句之后，只能用when,并要注意时态)He was about to leave, when the telephone rang.她正要离开，忽然电话响了。( 此时不能放在句首。主句动词一般体现 “正在” “即将”.while, as不能替代 She thought I w

13、as talking about her daughter, while, in fact, I was talking about my daughter.她觉得我在谈她女儿，然而，事实上在谈论我女儿。(表转折，对比，when, as都不能替代它) While the alien was buying a souvenir, the girl called the police.外星人买纪念品时，那女孩给警察打了电话。(表达主句，从句的动作同步发生，while后引导的状语从句的动词必须是延续动词不能是点动词，由于它表达较长时间)Mother was worried because littl

14、e Alice was ill, especially as (when/ while) father was away.妈妈紧张，由于小爱丽丝病了，特别是她爸爸不在家的时候。(此时as ,when, while可通用)2. 由till或until引导的时间状语从句。till和until一般状况下两者可以互换，但是在强调句型中多用until。并且要注意的是：如果主句中的谓语动词是瞬时动词时，必须用否认形式；如果主句中的谓语动词是延续性动词时，用肯定或否认形式都可以，但体现的意思不同。例如： I worked until he came back.我工作到她回来为止。 I didnt work

15、until he came back.她回来我这才开始工作。 3. 由since引导的时间状语从句。since引导的从句的谓语动词可以是延续性的动词，又可以是瞬时动词。一般状况下，从句谓语动词用一般过去时，而主句的谓语动词用目前完毕时，表述为：目前完毕时+since+一般过去时。但在It is 时间since从句的句型中，主句多用一般目前时。例如： It is five months since our boss was in Beijing.我们老板离开北京有五个月了。 知识扩展1. It is since 从.以来多长时间了It is five years since we met las

16、t time.2. It is +before(。才。)It was a long time before I went to sleep again.It was an hour before(until) the police arrived.二.因素状语从句：在一种句子中作时间状语的句子。连接词：由连词because, since, as引导, 也可由for, now that 等词引导1.I didnt go to school yesterday because I was ill.2. Since everybody is here, lets begin our meeting.

17、 既然。3. As you are in poor health, you should not stay up late. 既然。4.I asked her to stay to tea, for I had something to tell her.用法辨析：because , since , as , for辨析1）because语势最强，用来阐明人所不知的因素，回答why提出的问题。当因素是显而易见的或已为人们所知，就用as或 since。 I didnt go, because I was afraid. Since /As the weather is so bad, we ha

18、ve to delay our journey. 2）由because引导的从句如果放在句末，且前面有逗号，则可以用for来替代。但如果不是阐明直接因素，而是多种状况加以推断，就只能用for。 He is absent today, because / for he is ill. He must be ill, for he is absent today.三、条件状语从句连接词：if如果, unless (=if not) 如果不、除非(让步)1. If it doesnt rain tomorrow, we will go hiking.2. I will go to the party

19、 unless he goes there too.3. You will be late unless you leave immediately.=If you dont leave immediately, you will be late.条件状语从句：主将从现.He will not leave if it isnt fine tomorrow.四、目的、成果状语从句目的状语从句是指在一种句子中充当目的状语的句子。 成果状语从句是指在一种句子中充当成果状语的句子目的状语从句连接词so that, sothat , in order that 引导。成果状语从句连接词 sothat,

20、suchthat, so much/manythat引导。1. sothat 如此以至于He always studied so hard that he made great progress.2. so that 以至于, 以便于Ill run slowly so that you can catch up with me. (目的) I opened the window so that fresh air might come in. (目的)3. suchthat 如此以至Its such nice weather that all of us want to go to the p

21、ark.4. in order that=so that 为了We shall let you know the details soon in order that you can/may make your arrangements.5.比较：so和 such 其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so 是副词，只能修饰形容词或副词。 so 还可与表达数量的形容词many, few, much, little连用，形成固定搭配。 so nice a flowersuch a nice flower so many / few flowers such

22、 nice flowersso many people such a lot of people （ so many 已成固定搭配，a lot of 虽相称于 many，但 a lot of 为名词性的，只能用such搭配。） 难点so+形容词或副词 so+形+a(an)+单数可数名词 so +many /few+复数可数名词 so +much/ little+不可数名词 sothat与suchthat皆可引导目的地状语从句和成果状语从句。 The boy is so young that he cant go to school. He is such a young boy that he

23、 cant go to schoolso +adj/adv.+ that， such +n.+ that 以上两种句型都表达到果 so为副词,后接形容词，副词原型，可数名词前有many, few；不可数名词前有much, little修饰时，应采用句型：so many (few, much, little )+n. such为形容词, 后只能接名词。这名词既可以地可数的，也可以是不可数的。如果这名词是可数的,则必须在名词前加不定冠词a(an). 常用的形式是:such a (beautiful)garden, such(nice)people. 五、让步状语从句 让步状语从句是指在句子中作让步

24、的状语的句子连接词： though, although.，whetheror not难点：though, although当“虽然”讲, 都不能和but连用. Although/thoughbut的格式是不对的.但是她们都可以同yet (still) 连用. 因此thought (although)yet(still)的格式是对的的.Wrong: Although he is rich but he is not happy. Right : Although he is rich, yet he is not happy.虽然她很富有, 然而她并不快乐.Right : Although we

25、 have grown up, our parents treat us as childrenRight : Although we have grown up, our parents still treat us as children.尽管我们已经长大了,可是我们的父母仍把我们看作小孩.although, though 辨析 although不能作并列连词，although不能作副词，放在词尾表达强调时要用even though.1、Even though I didnt under a word, I kept smiling. 尽管典型例题 1） _she is young, sh

26、e knows quite a lot. A. WhenB. However C. Although D. Unless 2)ever if, even though.虽然 Well make a trip even though the weather is bad. 3) whetheror not 不管都 Whether you believe it or not, it is true. no matter 从句构造：no matter +特殊疑问词疑问词+陈述语序 或特殊疑问词+后缀ever+陈述语序 No matter what happened, he would not min

27、d. Whatever happened, he would not mind. 替代：no matter what = whatever no matter who = whoever no matter when = whenever no matter where = wherever no matter which = whichever no matter how = however 注意：no matter 不能引导主语从句和宾语从句。 （错）No matter what you say is not useful now. （对）Whatever you say is not u

28、seful now. 你目前说什么也没用了。 (Whatever you say是主语从句) （错）Prisoners have to eat no matter what theyre given, （对）Prisoners have to eat whatever theyre given.囚犯们只能给什么吃什么定语从句定语是指在句子中用来修饰名词、代词的成分定语从句是指在一种句子中作定语的句子，定语从句要放在所修饰的词后如：I have met the doctor who is in the No.1 hospital.定语从句的连接词：1.连接代词：who、which、whom、wh

29、ose、that 2.连接副词：when、where、why选用连接词的核心是看先行词(定语从句所修饰的名词或代词)一、连接代词的选用：1.who 指人，先行词为人,在从句中做主语Yesterday I helped an old man who lost his way.2. whom 指人，先行词为人,在定语从句中充当宾语，常可省略。Mr. Liu is the person (whom) you talked about on the bus.注意：关系代词whom在口语和非正式语体中常用who替代，可省略。3.which 指物，先行词为物,在定语从句中做主语或者宾语，做宾语时可省略Th

30、is is the pen (which) he bought yesterday. 4. that 指人时，相称于who或者whom；指物时，相称于which。在定语从句中做主语或者宾语，做宾语时可省略。The number of the people that/who come to visit the city each year rises one million.Where is the man that/whom I saw this morning?5. whose 一般指人，也可指物，在定语从句中做定语,译成 .的He has a friend whose father is

31、a doctor.指物时，常用如下构造来替代Do you like the book whose cover is yellow? = Do you like the book the color of which is yellow?介词+连接代词引导的定语从句连接代词在定语从句中做介词宾语时,从句常由介词+连接代词引导The school (that/which) he once studied in is very famous. The school in which he once studied is very famous.注意：1. 具有介词的动词短语一般不拆开使用，如：loo

32、k for, look after, take care of等This is the watch which/that I am looking for. (T) This is the watch for which I am looking. (F)2. 若介词放在连接代词前，连接代词指人时用whom，不可用who或者that；指物时用which，不能用that；连接代词是所有格时用whoseThe man with whom you talked is my friend. The plane in which we flew to Canada is very comfortable

33、. (T)3. “介词+连接代词”前可有some, any, none, both, all, neither, most, each, few等代词或者数词He loved his parents deeply, both of whom are very kind to him.In the basket there are quite many apples, some of which have gone bad.There are forty students in our class in all, most of whom are from big cities二、连接副词的选用

34、：1. when指时间，在定语从句中做时间状语I still remember the day when I first came to the school. 2. where指地点，在定语从句中做地点状语Shanghai is the city where I was born. 3. why指因素，在定语从句中做因素状语Please tell me the reason why you missed the plane.注意：关系副词引导的从句可以由“介词+关系代词”引导的从句替代The reason why/ for which he refused the invitation is

35、 not clear,From the year when/in which he was going to school he began to know what he wanted when he grew up.Great changes have taken place in the city in which./where I was born.三、判断关系代词和关系副词的措施: 精确判断先行词在定语从句中的成分(主、谓、宾、定、状)例1. Is this the museum _ you visited a few days ago?A. whereB. that C. on w

36、hich D. the one例2. Is this the museum _ the exhibition was held?A. whereB. that C. on whichD. the one关系词的选择根据在从句中所做的成分，先行词在从句中做主、定、宾语时，选择关系代词 (who, whom, that, which, whose)； 先行词在从句中做状语时，应选择关系副词 ( where 地点状语，when 时间状语，why 因素状语)四、介词+连接词用法阐明1）介词背面的关系词不能省略。 2）that前不能有介词。3）某些在从句中充当时间，地点或因素状语的介词+关系词构造可以同

37、关系副词when ,where和why 互换如：This is the house in which I lived two years ago.This is the house where I lived two years ago.Do you remember the day on which you joined our club?Do you remember the day when you joined our club? This is the reason why he came late. This is the reason for which he came late

38、.五限制性定语从句和非限制性定语从句限制性定语从句举例： china is a country which has a long history.非限制性定语从句举例： his mother, who loves him very much, is strict with him.要注意辨别如下几种句子的不同 his brother who is now a doctor always encourages him to go to college.她那当医生的哥哥常鼓励她要考上大学。（她尚有其她的哥哥） his brother, who is now a doctor, always enc

39、ourages him to go to college. 她的哥哥是当医生的，常鼓励她要考上大学。（她只有一种哥哥）关系代词as和which 引导的定语从句as和which引导非限制性定语从句，有相似之处也有不同之处。具体状况是：1as和which都可以在定语从句中做主语或者宾语，代表前面整个句子。(1) he married her, as/which was natural.(2) he was honest, as/which we can see.2. as引导非限制性定语从句，可放在主句之前，或者主句之后，甚至可以切割一种主句；which引导的非限制性定语从句只能放在主句之后。此外

40、，as有“正如，正像”的意思as is known to all, china is a developing country. he is from the south, as we can see from his accent. john, as you know, is a famous writer.he has been to paris more than several times, which i dont believe.注意：当主句和从句存在逻辑上的因果关系时，常用which tom was always late for school, which made his t

41、eacher angry.3.当先行次受such, the same修饰时，常用as i have never heard such a story as he tells.he is not such a fool as he looks.this is the same book as i lost last week.注意：当先行次由the same修饰时，偶尔也用that引导定语从句，但是和由as 所引导的定语从句意思不同 she wore the same dress that she wore at marys wedding.她穿着她在mary婚礼上穿过的一条裙子。 she wo

42、re the same dress as her young sister wore.她穿着和她妹妹所穿的同样的裙子。以the way为先行词的定语从句一般由in which, that引导，并且一般可以省略。 the way in which/ that/./ he answered the question was surprising. but 有时也可以做关系词引导定语从句there are very few but understand his idea. ( but= who dont )定语从句只能用that的几种状况1当先行词是anything, everything, not

43、hing (something 除外), few, all, none, little, some等代词时，或者是由every, any, all, some, no, little, few, much等修饰时Have you taken down everything that Mr. Li has said? All that can be done has been done. There is little that I can do for you.注意：当先行词指人时，偶尔也可以用whoAny man that/who has a sense of duty wont do su

44、ch a thing.2. 当先行词被序数词修饰 The first place that they visited in London was the Big Ben.3. 当先行词被形容词最高档修饰时 This is the best film that I have seen.4. 当形容词被the very, the only 修饰时 This is the very good dictionary that I want to buy,当先行词指人时，偶尔也可以用whoWang Hua is the only person in our school who will attend

45、the meeting？5. 当先行词前面有who, which等疑问代词时Who is the man that is standing there?6. 当先行词既有人，也有动物或者物体时Can you remember the scientist and his theory that we have learned?同位语从句（一）一般来说，在主从复合句中，用作同位语的从句叫同位语从句。它一般跟在某些名词之后，用以阐明或解释该名词表达的具体内容。可以跟同位语从句的名词一般有：advice, decision, fact, hope, idea, information, message

46、, news, promise, proposal, reply, report, suggestion, word（消息），problem， question, doubt, thought等。They were delighted at the news that their team had won.有时同位语从句可以不紧跟在被阐明的名词背面，而被别的词隔开。 如：The thought came to him that Tom might have returned the book.（二）引导词1. The news that Mr. Li will be our new Engli

47、sh teacher is true.2. He hasnt made the decision whether he will go there. 3. The question who should do the work is being discussed at the meeting.4. I have no idea what the boy is doing in the next room now.5. We havent yet settled the question where we are going to spend our summer vacation this

48、year.6. I have no idea how I can get to the railway station. 7. I have no idea when he will be back小结： that引导同位语从句时无词义，也不充当任何成分，但一般不可以省略，如句1； whether引导同位语从句时意为“与否”，一般不能用if来替代, 如句2; 连接代词who, what等可以引导同位语从句，如句3， 4； 连接副词where, how, when等可以引导同位语从句， 如句5，6，7。(三) that 引导的同位语从句和定语从句 意义不同：同位语从句用来进一步阐明前面名词的内容

49、；而定语从句用来修饰、限定前面的先行词。试比较：1. The news that our team has won the final match is encouraging. 2. The news that you told us is really encouraging. that的功能不同：that引导同位语从句时是一种纯连词，不充当任何成分；而引导定语从句时，不仅起连接作用，并且还指代先行词并在从句中充当主语、宾语等成分。试比较：1. Dad made a promise that he would buy me a CD player if I passed the Engli

50、sh test. 2. Dad made a promise that excited all his children. 可否省略：that在引导同位语从句时，一般不可省略。在引导定语从句时，若在从句中作宾语，一般可以省略，若作主语则不可以省略。主语从句1 由连词that引导的主语从句: 引导词that无含义,在句中不做成分,不可以省。That you will win the medal seems unlikely. 你想获得奖牌看起来是不也许的。2 用连词 whether 引导的主语从句: whether有含义(与否),在句中不做成分,不可以省。Whether she is comin

51、g or not doesnt matter too much.她来不来都无关紧要。3 用连接代词引导的主语从句(在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中，其连接代词在句中起名词性作用，担当一定成分).What you need is more practice.你所需要的是更多的训练。Whatever we do is to serve the people.我们无论做什么都是为人民服务。4 用连接副词when, where, why, how引导的名词性从句(其连

52、接副词有含义,在句中作状语。)Where we should leave it is a problem.注意1. it 做形式主语,而将主语从句放在句末（特别是当谓语较短时）。That light travels in straight lines is known to all.=It is known to all that light travels in straight lines.众所周知光沿直线传播。(当what引导的主语从句表达“的东西”时，一般不用it作形式主语。)错:It is a book what he wants.对:What he wants is a book.

53、 她想要的是本书。固定用法和译法（1） It is +名词+从句It is a fact that 事实是It is good news that 是好消息It is a question that 是个问题It is common knowledge that 是常识类似的名词尚有：a pity；a wonder；a good thing； no wonder； surprise等。（2） It is +形容词+从句It is necessary that 有必要It is clear that 很清晰It is likely that 很也许It is important that 重要的

54、是类似的形容词尚有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc.（3） It is +过去分词+从句It is said that 据说It is reported that 据报道It has been proved that 已证明It must be proved that 必须指出类似的过去分词尚有：known; e

55、stimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out,etc.。当“及物动词 + 宾语”较短时，也可用这种构造。It shocked me that Peter did not tell anybody where he was.让我吃惊的是彼得没有告诉任何人她在哪里。2.只用whether不用if引导主语从句.表语从句一. 在复合句中作表语的从句, 就叫做表语从句。表语从句一般放在系动词之后,构造

56、是“主语+系动词+表语从句”。连系动词：be动词、表达持续的系动词（keep, remain, stay）、感官动词feel(摸起来，感觉) , smell(闻起来) , sound(听起来) , taste(尝起来，吃起来) 等、表达变化的系动词（become, grow, turn, fall, get, go,）、表终结的系动词prove, turn out(成果是，证明是)、seem, appear（看起来）连系动词一般不用于被动语态和进行时态中。He has become what he wanted to be ten years ago. 她已经成为了她前想成为的。His sug

57、gestion is that we should stay calm. 她的建议是，我们应当保持冷静。二表语从句的引导词1.附属连词：that / whether /as if /as though/as/because(1) that引导表语从句自身没有词义，在句中只起连接作用，不充当句子成分，一般不能省略。That fact is that more than seventy percent of the earths surface is covered by water.连接词that一般不能省略，但当主句中含动词do的某种形式时，that可以省略。What I want to do

58、 is (that) I can go up to him and thank him. 我想做的事是走到身边去感谢她。(2) whether引导表语从句表达“与否”,但不充当句子的成分。The question is whether we can finish our work by tomorrow evening.if 与whether均意为“与否”，但引导表语从句时，只能用whether, 不能用if。(3)as if/though“仿佛”，引导表语从句时要注意语态.如果句中的状况与事实不相符，从句多用虚拟语调。如果从句表达与目前事实相反,谓语动词用一般过去式；如果从句表达与过去事实相

59、反时,谓语动词要用“had + 过去分词 ”，如果从句表达将来的也许性不大，用would (might ,could )+动词原形.Li Lei is now in a new jacket. He looks as if he were an American boy. (目前事实相反)The girl is giving us a vivid description of the moon. It seems as if she had been to the moon many times. （与过去事实相反）It looks as if it might rain. （与将来事实相反）

60、但是，如果as if/though引导的表语从句所示的与事实相符，从句则用陈述语调。The clouds are gathering. It looks as if is going to rain.(4) as引导表语从句He looked just as he had looked ten years before.她看起来还与十年前同样。(5) because引导表语从句常用构造：This/That/It is/was becauseThat is because I dont like Chinese.2.连接代词：who/whom/whose/what/which/whoever/w

61、hatever/whichever/whomever，在表语从句中做主语、宾语、表语和定语。Tom is no longer what he used to be. (what做表语)The problem is who is fit for this job. (who做主语)This is what I want to tell you. (what做宾语)The problem is whose work is the best. (whose做定语)3.连接副词：when/where/how/why，在表语从句中做状语。The question is how he did it. 问题

62、是她是如何做此事的。The question is where we can live. 问题是我们能住在哪儿。注意一reason做主语或主语中涉及事件的起因时,背面的表语从句表达因素时要用that来引导,而不用because；why引导主语从句做主语时，表语从句用that引导，不用because。The reason is that he got up late.Why he is late is that he got up late.二. that is why/because(1) That is why .是常用句型,其中why引导的从句在句中作表语,该句型一般用于针对前面已经说过的因素进行总结。That is the reason why .与That is why .是同义的，“这就是的因素/因此”，但是从语法构造上讲That is the reason why .中的wh