初中英语从句讲解和练习.docx

1、初中英语从句讲解和练习xx从句讲解宾语从句一定义：宾语从句是指在一个句子中充当宾语的句子，如：He said that he wanted to be a teacher when he grew up.二宾语从句的特点：1.宾语从句有自己的连接词2.宾语从句用陈述语序 3.宾语从句的时态三.类型宾语从句与其他名词性从句一样，也有三种类型：2.由从属连词if或whether引导的宾语从句表示“是否（有，能，已经）”等一般疑问句的含义。例如：I wonder whether (if) he lives here.The teacher asked whether (if) they were g

2、etting ready for the English Evening.如果要强调“究竟还是不”，常用连词whether引导宾语从句，后面再加or not或直接在whether后加or not。宾语从句要用陈述句语序。如：Id be interested to know whether he will see the film“House of Flying Daggers”or not.=Id be interested to know whether or no the will see the film“House of Flying Daggers”.3.由连接代词who,whom,

3、whose,what,which和连接副词when,where,how,why等引导的宾语从句表示“谁，谁的，什么，哪（个，些），何时，何地，怎样，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.四.宾语从句的时态呼应：1）当主句是现在时或将来时的时候，宾语从句可以用所需要的任何时态。2）主句是过去时，宾语从句一般

4、只能用过去时的某种形式；当从句叙述的是客观事实或一般真理时，宾语从句仍然用现在时态。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。三.宾语从句的时态，只要记住以下口诀就可以了“主现则从任，主过则从过，客观真理一般现”。A.主现则从任：主句如果是一般现在时，则从句根据时间状语需要从八种时态中任选一种，如：1.He tells me he likes English very much(一般现在时)2.He asks me if I saw his brother yesterday(一般过去时)3.She wants to know what has happene

5、d(现在完成时)4.I say that the world is changing all the time(现在进行时)5.He wonders what I was doing at five yesterday afternoon.(过去进行时)6.My father tells me that he will fly to Qingdao for a holiday(现在将来时)7.My sister says he had learn one thousand English words by the end of last term(过去完成时)8.My friends hope

6、s me that I can help him(含情态动词的一般现在时)B.主过则从过：主句如果是一般过去时，则从句根据时间状语需要从四种带“过”字的时态中任选一种，带“过”字的时态分别是如：1.一般过去时，2.过去进行时，3.过去将来时，4.过去完成时1.He told me that he liked playing football(一般过去时)2.She asked me whether I was watching TV at this time last day(过去进行时)3.I wanted to say that our team would beat them(过去将来时

7、)4.He wondered if I had finished my homework (过去完成时)5.I said I could help him (含情态动词的一般过去时)C.客观真理一般现:客观真理永远用一般现在时，如：1.He says the moon goes around the earth2.He told me that one and one makes two.状语从句状语从句是历年中考的一个必考项目，一定要特殊注意。英语中,修饰动词、形容词、副词等的句子成分叫状语（adverbial)。状语的功用：状语说明地点、时间、原因、目的、结果、条件、方向、程度、方式和伴随

8、状况等，根据状语的功能状语从句可分为：时间状语从句、原因状语从句、目的状语从句、结果状语从句、条件状语从句。一时间状语从句：在一个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（在以后） before（在以前） as soon as（一就） since（自从到现在） till /until（直到才） by the time（到为止）依旧是连接词后加陈述语序。举例：1.when当的时候（一般情况下主句是将来时的时候，从句要用一般现在时。）Mozart started writing music when he was four ye

9、ars old.(当)莫扎特的时候，开始写音乐作品。当我长大了，我要当老师2.while当时He visited a lot of places while he was traveling.他在旅途中参观了许多地方。3.as在的同时；一边一边He smiled as he stood up.他一边站起来一边笑着。4.after在之后He left the classroom after he had finished his homework the other day.前几天做完作业之后回的家。5.before 在之前Mr. Brown had worked in a bank for a

10、 year before he came here.布朗先生来这之前已经在一家银行里工作一年了。6.as soon as 一就(一般情况下主句是将来时的时候，从句要用一般现在时。)We began to work as soon as we got there.我们一到那就开始工作。I will write to you as soon as I get home.我一到家就给你写信。7.since 自以来 到现在表示自过去的一个起点时间到目前(说话时间)为止的一段持续时间。主句一般用现在完成时，从句用一般过去时。Mr Green has taught in that school since

11、 he came to China three years ago.自格林先生来中国以来，他就在这所学校教书。(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)表示。)8 till /until都可以作连词，连接时间状语，也可以作介词，与其它词构成介词短语，在句中作状语。They walked till /until it was dark.他们一直走到天黑。Xiao Ming didnt leave home till / until his father came back.小明直到他爸爸回来才离开家。9. by the time 到为止 (

12、所在句子的主句应用现在或过去完成时)By the time he gets there , his father has already gone.他到家的时候，他爸爸已经走了。By the time I got to school, the class had already began.我到校时，已经开始上课了。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有时表示“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

13、in the countryside, I used to carry some water for him.当的住在农村时，我常常为他担水。（延续性的动词）We were about to leave when he came in.我们就要离开，就在那时他进来了。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时发生（或者相对应）。并且while有时还可以表示对比。例如：While my wife was reading the newspaper, I was watching TV. (was reading是延续性的动词，was reading和was watc

14、hing同时发生)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表示“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时发生；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表示“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，而不强调开始下雪的特定时间）as when while的辨析as when w

15、hile都表示主、从句动作同时发生，三者差异如下：as表示“一边。一边的意思强调两个动作同时进行，并表示对比时用于发生时间较段时when1、还可以表示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.常用于常见搭配中while1、用于时间较长时2、 强调两个动作同时进行，并表示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。 ( 动作同时发生，when可换为as, 但不能换为while，因为get是点动词.)Wh

16、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，注意时态表达，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.他正要离开，忽然电话响了。( 此时不能放在句首。主句动词一般表达 “正在” “即将”.while, as不能代替She thought I wa

17、s talking about her daughter, while, in fact, I was talking about my daughter.他以为我在谈她女儿，然而，实际上在谈论我女儿。(表转折，对比，when, as都不能代替它)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。(表示主句，从句的动作同时发生，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，因为它表示较长时间)Mother was worried because little

18、Alice was ill, especially as (when/ while) father was away.妈妈担心，因为小爱丽丝病了，特别是他父亲不在家的时候。(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一般情况下两者可以互换，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，必须用否定形式；如果主句中的谓语动词是延续性动词时，用肯定或否定形式都可以，但表达的意思不同。例如：I didnt go to bed until（till） my father came back.直到我父亲

19、回来我才上床睡觉。It was not until the meeting was over that he began to teach me English.直到散会之后他才开始教我英语。I worked until he came back.我工作到他回来为止。I didnt work until he came back.他回来我这才开始工作。Please wait until I arrived.在我到达之前请等我。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。一般情况下，从句谓语动词用一般过去时，而主句的谓语动词用现在完成

20、时，表述为：现在完成时+since+一般过去时。但在It is 时间since从句的句型中，主句多用一般现在时。例如：I have been in Beijing since you left. 自从你离开以来，我一直在北京了。Where have you been since I last saw you? 自上次我和你见面以后，你到哪里去了？It is four years since my sister lived in Beijing. 我妹妹不在北京住有四年了。It is five months since our boss was in Beijing.我们老板离开北京有五个月了。

21、知识扩展1. It is since从。以来多长时间了(因为since +从句或名词，表示一段时间)It is five years since we met last time.从我们上次见面已经五年了。2. It is +before(。才)It was a long time before I went to sleep again.过了很长时间我才睡着。It was an hour before(until) the police arrived.过了一个小时，警察才来。二.原因状语从句：在一个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fo

22、r, now that 等词引导1.I didnt go to school yesterday because I was ill.我昨天没去上学，因为我生病了。2. Since everybody is here, lets begin our meeting.既然大家都来了, 让我们开始开会吧.3. As you are in poor health, you should not stay up late.既然你身体不好, 你就不该熬夜.4.I asked her to stay to tea, for I had something to tell her.我请她留下来喝茶,因为我有

23、事要告诉她.用法辨析：because , since , as , for辨析1）because语势最强，用来说明人所不知的原因，回答why提出的问题。当原因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 have 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来代替。但如果不是说明直接原因，而是多种情况加以推断，就只能用for。He is absent today, becaus e

24、 / 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) 除非。(让步)1.If it doesnt rain tomorrow, we will go hiking.如果明天不下雨, 我们就去远足.2.You will get good grades if you study hard.如果你努力学习,就会取得好成绩.3.I will go to the party unless he goes there too.我不会去参加聚会的, 除非他也去.(如果他不去,我也不

25、去.)4.You will be late unless you leave immediately.如果你不马上走,你将会迟到的.(=If you dont leave immediately, you will be late.)难点提示：用条件状语从句时要注意时态的正确使用,当主句是将来时的时候,从句要用一般现在时.He will not leave if it isnt fine tomorrow.一般将来时， 一般现在时They are going to have a picnic if it doesnt rain next week.一般将来时, 一般现在时四、目的、结果状语从句

26、目的状语从句是指在一个句子中充当目的状语的句子。 结果状语从句是指在一个句子中充当结果状语的句子目的状语从句连接词so that, sothat , in order that 引导。结果状语从句连接词 sothat, suchthat, so much/manythat引导。1.sothat 如此以至于The scientists report was so instructive that we were all very excited.科学家的报告很有教育性，我们感到很兴奋。He always studied so hard that he made great progress.他总

27、是那么努力，所以他取得了很大的进步。2.so that 以至于, 以便于3. suchthat 如此以至Its such nice weather that all of us want to go to the park.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

28、还可与表示数量的形容词many, few, much, little连用，形成固定搭配。so foolishsuch a fool so nice a flowersuch a nice flower so many / few flowers such nice flowersso much / little money. such rapid progressso many peoplesuch a lot of people（ so many 已成固定搭配，a lot of 虽相当于 many，但 a lot of 为名词性的，只能用such搭配。）sothat与suchthat之间的转

29、换既为 so与such之间的转换。The boy is so young that he cant go to school.He is such a young boy that he cant go to school难点so+形容词或副词 so+形+a(an)+单数可数名词 so +many 或few+复数可数名词 +that+much或 little+不可数名词 so that ,suchthat 都可以in order that两者皆可引导目的地状语从句和结果状语从句，当他们引导目的状语从句时，从句的谓语里常常有can, could, may, might, will, would等

30、次。so +adj或adv.+ that， such +n.+ that 以上两种句型都表示结果,其中so为副词,后接形容词，副词原型，当可数名词前有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). 常见的形式是:such a (beautiful)garden, such(nice)people.1。Ive had so many falls that Im blac

31、k and blue all over.2。there are so few notebooks that I cant give you any.3。It is such nice weather that Id like to take a walk.4。Mike is so honest a man that we all believe him. (=Mike is such an honest man that we all believe him.)5。The weather is so nice that Id like to take a walk.五、让步状语从句 让步状语从句是指在句子中作让步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.但是他们都可以同yet (still) 连用. 所以thought (although)yet(still)的格式是正确的.Wrong: A