2022年初中英语从句知识点总结归纳.docx
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1、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.名二 宾语从句有三种类型 :归师纳1由从属连词 that 引导的宾语从句表示陈述意义,连词that 常可被省略;结总例如: I hope that they will have fun. Mary said that she felt sleepy.|Can t you see that I|m a bird.大留意:(1)当主句的谓语动词是 think,believe 等时,宾语从句尽管要表示否有肚定意义, 却不用否定形式
2、, 而将 think 等动词变为否定形式; 如:I dont think he,容will come. 我认为他不会来;容( 2)两个表示陈述意义的宾语从句并列时, 有时省去第一个从句的连词 that,学习但其次个从句的连词 that 一般不行以省略;如:难困He told me thatthey could not decide what to do and that they asked my advice.事之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;学业例如: I wonder whether if he liv
3、es here.成有3.由连接代词 who,whom,whose,what,which 和连接副词 when,where,how,why更,等引导的宾语从句表示“谁,谁的,什么,哪(个,些),何时,何地,怎样,上为什么” 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,宾语从句一层用陈述句语序;楼例如: 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 :“主现就从任,主过
4、就从过,客观真理一般现”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,宾语从句一般只能用过去时的某种形式;当从句表达的是客观事实或一般真理时,宾语从句仍旧用现在时态;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;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 当连接词本身又是宾语从句的主语时,后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
5、容词、副词等的句子成分叫状语;状语的功用:状语说明地点、时间、缘由、目的、结果、条件、方向、程度、方第 1 页,共 14 页式和相伴状况等, 依据状语的功能状语从句可分为: 时间状语从句、 缘由状语从句、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名归师(在, 以后)before(在, 以前)as soon a(s 一, 就)since(自从, 到现在)纳till /until (直到 , 才)by the time(到 , 为止)照旧是连接词后加陈述语
6、序;结总1.when当, 的时候(一般情形下:主将从现)|I will become a teacher when I grow up|大2.while当, 时肚有He visited a lot of places while he was traveling.,容3.as在, 的同时;一边 , 一边,容He smiled as he stood up.学习4.after在, 之后难困He left the classroom after he had finished his homework the other day.事之5.before在, 之前,Mr. Brown had work
7、ed in a bank for a year before he came here.学业6.as soon as一, 就, 一般情形下:主将从现 成有We began to work as soon as we got there.更,I will write to you as soon as I get home.上7.since自, 以来 到现在一层表示自过去的一个起点时间到目前 说话时间 为止的一段连续时间;主句一般用楼现在完成时,从句用一般过去时;Mr Green has taught in that school since he came to China three yea
8、rs ago仍. 可 以用作介词,本句从句仍可以用短语: since three years ago自8till /until直到三年前以来 表示;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.Xiao Ming didn t leave home till / until his father came b. ack9.by the time到, 为止 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
9、gone.By the time I got to school, the class had already began.用法辨析: 1.when, while 和 as的区分When引导的从句的谓语动词可以是连续性的动词,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; 瞬时动词来了;When I lived in the countryside, I used to carry some water for him.当的住在农村时,我经常为他担水; (连续性的动词)We were a
10、bout to leave when he came in.我们就要离开,就在那时他进While引导的从句的谓语动作必需是连续性的,并强调主句和从句的动作同时第 2 页,共 14 页发生(或者相对应);并且 while 有时仍可以表示对比;例如:While my wife was reading the newspaper, I was watching TV.I like playing football while you like playing basketball. 我喜爱踢足球,而你喜爱打篮球;(对比)名As表示“一边 , 一边” ,as 引导的动作是连续性的动作,一般用于主句和师
11、从句动作同时发生; as 也可以强调“一先一后;纳归例如: We always sing as we walk. 我们总是边走边唱;( as 表示“一边, 一边” )结总As we was going out, it began to snow.当我们出门时,开头下雪了; (as强调句中|两个动作紧接着先后发生,而不强调开头下雪的特定时间)|大as when while 都表示主、从句动作同时发生,三者差异如下:肚有as,容表示“一边;一边的意思容when学习1、仍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;难困2、whenand then; at that moment 正事之3
12、.常用于常见搭配中,while学业1、 用于时间较长时在那个时候 成有2、 强调两个动作同时进行,并表示对比时更,有时这三个连词可以互换,有时不行以;上lt was raining hard when as I got there.一层我到那里时, 正在下大雨; 动作同时发生, when 可换为 as, 但不能换为 while ,楼由于 get 是点动词 .When 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,留意时态表达,只能用 when When I got to the cinema, the f
13、ilm 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,并要留意时态 He was about to leave, when the telephone rang.他刚要离开,突然电话响了; 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 was 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
14、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需是连续动词不能是点动词,由于它表示较长时间Mother was worried becauselittle Alice was ill, especially as when/ while father was away.妈妈担忧,由于小爱丽丝病了, 特殊是他父亲不在家的时候; 此时 as ,when, while第 3 页,共 14 页可通用2. 由
15、 till 或 until 引导的时间状语从句;till 和 until 一般情形下两者可以互换,但是在强调句型中多用until ;并且要留意的是:假如主句中的谓语动词是瞬时动词时, 必需用否定形式; 假如主句中的谓语动词是连续性动词时,用确定或否定形式都可以,但表达的意思不同;例如:名归师I worked until he came back我.工作到他回来为止;纳I didnt work until he came back.他回来我这才开头工作;结总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连续性的动词,又可以是瞬时动词;一般情|大况下,从句谓语动词
16、用一般过去时,而主句的谓语动词用现在完成时,表述为:有肚现在完成时 +since+一般过去时;但在 It is 时间 since 从句的句型中,主句多,容用一般现在时;例如:容It is five months since our boss was in Beijing我.学习学问扩展难困1. It is since从.以来多长时间了事之It is five years since we met last time.,2. It is +before,;才; 学业It was a long time before I went to sleep again.成有It was an hour b
17、efore until the police arrived.更,二.们老板离开北京有五个月了;上缘由状语从句:在一个句子中作时间状语的句子;一层连接词:由连词 because, since, a引s 导, 也可由 for, now that 等词引导楼1.I didn t go to school yesterday because I was ill.2. Since everybody is here, let s begin ou既r m然e;e;ti;ng.3. As you are in poor health, you should not stay up late.既然;4.I
18、 asked her to stay to tea, for I had something to tell her.用法辨析: because , since , as , fo辨r 析1) because语势最强,用来说明人所不知的缘由,回答why 提出的问题;当缘由是显而易见的或已为人们所知,就用as 或 since;I didn t go, because I was afraid.Since /As the weather is so bad, we have to delay our journey.2) 由 because引导的从句假如放在句末,且前面有逗号,就可以用for 来代
19、替;但假如不是说明直接缘由,而是多种情形加以推断,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 假如, unless =if not假如不、除非 让步1. If it doesn t rain tomorrow, wegowhilliking.2. I will go to the party unless he goes there too.3. You will be late unless you leave immed
20、iately.=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 isn t fine tomorrow.第 4 页,共 14 页四、目的、结果状语从句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, so,that , in order that 引导;名归师结果状语从句连接词 so,that, such,that, so much/many,that 引导;纳1.so,that如此, 以至于
21、结总He always studied so hard that he made great progress.|2.so that以至于, 以便于|大Ill run slowly so that you can catch up with me. 目的肚有I opened the window so that fresh air might come in. 目 的,容3.such,that如此, 以至容It s such nice weather that all of us want to go to the park.学习4.in order that=so that为了难困We sh
22、all let you know the details soon in order that you can/may make your事之arrangements.,5.比较: so 和 such学业其规律由 so 与 such 的不同词性打算; such 是形容词,修饰名词或名词词组,成有so 是副词,只能修饰形容词或副词;so 仍可与表示数量的形容词many, few,更,much, little 连用,形成固定搭配;上so nice a flowersuch a nice flower一层so many / few flowerssuch nice flowers楼so many p
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