(完整版)初中英语从句语法讲解
从句
从句按其在复合句中的作用,分为主语从句、表语从句、宾语从句、定语从句和状语从句等。（参见以下各条）
3、各从句在句子中的位置以及用法：
(1) 表语从句：在句子中作连系动词的表语的从句,它位于主句中的系动词之后。
例如：That is why he did not come to school yesterday. / It is because you are so clever.
(2) 宾语从句：在句子中作及物动词或介词的宾语。
①基本形式：（主句＋）连词+从句主语+从句谓语+...
②关于宾语从句连词的选择：
若从句来源于一个陈述句,那么,连词用that,在口语中that可以省略;
若从句来源于一个一般疑问句,连词则用if 或whether;
若从句来源于一个特殊疑问句,则连词就是疑问词(如what,who,where,when等)
例如：They believe that the computer will finally take the place of human beings.(他们相
信计算机终将代替人类。) (从句本来就是陈述句)/ I wonder whether I should say
something for him to the headmaster. (我不知道是不是该为他在校长跟前说点什么。) (从
句来源于一般问句Shall I say something for him to the headmaster?)/ He asked me
where he could get such medicine. (他问我在哪儿能搞到那样的药。) (从句来源于特殊问句
Where can he get such medicine? )
③宾语从句的时态问题：如果主句是现在时,从句则用现在某一时态,甚至可以用过去时；
如主句是过去时,从句则相应地使用过去某一时态,遇到客观真理时仍然用现在时。如：I think I
will do better in English this term. (我想本学期我的英语会学得好点。) / The teacher asked
the boy if the earth is round. (老师问那个男孩地球是不是圆的。)
④下列结构后面的从句一般也作为宾语从句看待：
be sorry / afraid / sure / glad +that从句,如：I’m sorry I’m late. (对不起,我迟到了。) / I’m afraid he isn’t in at the moment. (恐怕他此刻不在家。)
(3) 状语从句：在复合句中作状语,其位置可以在主句前或主句后。状语从句可以分为时间、地点、原因、
目的、结果、比较、让步、条件等几种。状语从句由从属连接词引导。
时间状语从句通常由when ,as ,while, after, before, since, as soon as ,since, till (until), while, whenever等引导。时间状语从句一般放在句首或句尾,特别注意,时间状语从句不允许使用将来时,而应该用现在时替代。如：When you finish the work, you may go out to play with Sam.
(你完成工作就可以出去和Jim一起玩了。) / I won’t leave until Mum comes back. (妈妈回来了我才会走。)
地点状语从句通常由where, wherever等引导。如：Go back where you came from! (哪里来还滚到哪里去！) / I will never forget to catch the thief who stole my necklace wherever he may be. (我永远也不会忘记去抓住那个偷我项链的贼,无论他会在哪里。)
原因状语从句通常由because, since, as等引导,一般放在句首或句尾。如：He went abroad because his father had found a good university for him. (他出国了,因为他父亲给他找了一所好大学。)
目的状语从句通常由so that..., so...hat..., in order that...等引导,往往放在句尾,从句中通常含有can / could / may / might等情态动词。如：He got up earlier so that he could catch the first train. (他起身更早为的是赶上第一班车。)
结果状语从句通常由so that..., so...that... 等引导,放在句尾。结果状语从句一般表示已经发生的事情,故多为过去时态。如：He lost so many bikes that he decided never to buy a new one.
(他丢了那么多辆自行车,他决定再也不买新车了。)
比较状语从句通常由as, than, as (so)...as等引导,一般省略从句的谓语部分,只剩下名词或代词(用主格或宾格均可)。如：Jane is much taller than I/me. (Jane比我高多了。) / I don’t have
as many books as you (do). (我书没有你多)
让步状语从句通常由though (although), as, even if( even though), however, whatever等引导。如：Even if you pay the debt(债务) for me, I will not thank you because it has nothing to do with me.(即使你替我还了债我也不会感谢你,因为它与我毫无关系。)/ He wears a T-shirt though it is very cold. (他穿了一件T恤衫,尽管天很冷。)
条件状语从句通常由if, unless, as long as等引导,条件状语从句一般放在句首或句尾,特别注意,时间状语从句不允许使用将来时,而应该用现在时替代。You will certainly fail in the coming final exams unless you work much harder. (即将来到的期末考试你肯定考不及格,除非你更用功。) / If it doesn’t rain tomorrow, we shall go hiking. (如果明天不下雨我们就要去徒步旅行。)
[注意] 1、because与so；(al)though与but；if与so不可以同在一个句子中成对出现。
2、时间、条件、原因,让步状语从句放在句首时需要用逗号与主句隔开。
(4) 定语从句：在复合句中作定语用修饰句子中某一名词或代词的从句叫定语从句。
①定语从句的位置：放在名词或代词的后面。如：The man who has an umbrella in his hand is
my uncle. (手上抓了一把雨伞的人是我的叔叔。)
②语法术语的改变：被修饰的名词或代词称为先行词；引导定语从句的连接词称为关系词,其中
that、which、who称为关系代词,where、when、how称为关系副词。
③关系代词或关系副词的作用：
关系代词who、whom和whose指人,分别在从句中作主语、宾语和定语。which指物that多指物, 有时也指人,它们在从句中可以作主语或宾语。定语从句中关系代词作从句宾语时可以省略。This is the thief (that/who/whom) we have been looking for these days. (这个就是我们近日一直在找的小偷。) / Please find a room which is big enough for all of us to live in. (请找一间足够大能住下我们全体的房间。)
关系副词when或where引导定语从句时,它们在从句中分别作时间状语和地点状语。如：This is the room where they had a quarrel a week ago. (这是一个星期前他们吵架的房间。) / I can never forget the day when I first saw you. (我永远不会忘记第一次见到你的日子。)
④限制性定语从句和非限制性定语从句。限制性定语从句在句中不能省略,否则主句意思就不完整。
非限制性定语从句和主句之间往往用逗号分开,这种从句是一种附加说明,如果从句子中省去,也不致于影响主句的意思。如：She spent the whole evening talking about her latest book, which none of us had heard of. (她一个晚上都在谈论她最近的书,我们一个人都没有听说过那本书。)
[注解]
1、关系代词只能用that的情况：当先行词是指事物的不定代词(all, anything等),或先行词部分含
有最高级,或含有序数词时,不能用其他的关系代词,只能用that. 如：All that Lily told me seems untrue. (Lily告诉我的话似乎不真实。) / Can you give me anything that has no sugar inside?(能不能给我点里面没有糖的东西？)/ This is the first two-story bus that runs in our city. (这是第一辆运行于我市的双层公交车。)
2、关系代词在从句中作主语时一般用who(指人)、that(指物),而不用that指人或用which指物。
如：Do you know the woman who is weeping in the corner? (你认识那个在角落里哭泣的女人吗？) / Do not tell me any words that have nothing to do with me. (跟我无关的话,请一个字也不要说。)
3、关系代词作从句的宾语时,常用which或whom,较少使用that或who,而且,关系代词常常省略。
如：Tom’s father was the first parent whom our teacher talked to. (Tom的父亲是我们老师第一个谈话的人。)
4、当关系代词紧跟在介词后面时,必须用which或whom,而当介词移到句尾时,则又可以使用that
或who. 如：This is the room in which Miss Li once lived. (= This is the room Miss Li
once lived in.) (这是李小姐曾经居住过的房间。)
(5) 主语从句：在句子中充当句子主语的从句叫主语从句。位于谓语动词之前。通常由that,whether
以及疑问连词引导。一般情况下,常用it替代主语从句,而将主语从句移到句尾。如：When we
should start is still a question. (我们该在什么时候开始还是个问题呢。)
十五、直接引语和间接引语(初中不作特别要求)
1、直接引语和间接引语：在陈述句中,直接引用说话人原来的语句,称为直接引语。在书写时,直接引语用引
号。用自己的词语来转述表达原来说话人说的内容,称为间接引语。
2、直接引语改变为间接引语：
1、直接引语如果是陈述句,变为间接引语时应注意以下各点：
①不用引号,而用连接词that,但有时可省略。
②人称作相应变化；
③主句里的动词如果是过去时,间接引语中的时态一般应作相应改变：一般现在时变一般过去时；一
般将来时变过去将来时；现在进行时变过去进行时；现在完成时变成过去完成时；一般过去时变成过去完成时；但一般过去时如与一个具体的过去时间连用,则时态不变。
如：He says,"I am not from the USA.”→He says that he is not from the USA.
Mr Smith said to his girl friend,“I haven’t seen you for a long time.”
→Mr Smith said to his girl friend that he had not seen her for a long time.
2、直接引语如果是一般疑问句,变为间接引语时,需用从属连接词whether或if引导,词序要改变。如：
Lin Tao said to Miss Green, "Is it made in China?”→Lin Tao asked Miss Green if it was made in China.
3、直接引语如果是特殊疑问句,变为间接引语时,需用疑问词引导,词序是：连词+主语+谓语。
如：Lucy said to me, “How can I help?”→Lucy asked me how she could help.
this
these
now
ago
today
this week(month,etc.) next week ( month,etc.) yesterday
tomorrow
here that
those
then
before
that day
that week ( month,etc.) the next week ( month,etc.) the day before
the next (following) day there
4、直接引语如是祈使句,变间接引语时,须将祈使句变为动词不定式,并在动词不定式前用tell, ask, order. 如：He said to the little boy,“Come here, young man! ”
→He asked the little boy to go there.
5、直接引语变为间接引语时,指示代词以及表示时间和地点的词或词组应作相应变化：
在直接引语中在间接引语中
初中英语语法宾语从句讲解_专项练习及答案
初中英语语法宾语从句讲解，专项练习及答案注意！宾语从句小口诀： 宾语从句三注意，时态语序引导词； 主句一般现在时，从句不需受限制； 主句一般过去时，从句须用相应时； 陈述句转化that引，一般疑问句用if/whether, 特殊问句疑问词，引导词后陈述式。 一、基本讲解 1 概念:在句中担当宾语的从句叫宾语从句，宾语从句可作谓语动词的宾语，也可做介词的宾语。eg, He said he was good at drawing. (动词宾语) He asks him how long Mike has been down . (动词宾语) Miss Zhang is angry at what you said. (介词宾语) 2.连接词 (1) .陈述句转化成宾语从句时，引导词用that,口语中常常省略。 e.g, She told me (that) she would like to go with us. (2)以whether 或if 引导的宾语从句, 主要用来引导一般疑问句意思或选择疑问句意思的宾语从句，从句同样是陈述语序 eg, I wonder if /whether u have told the new to Li Lei . 注意：一般情况下，whether 和if 可以互用，但有些情况例外。 a. 当从句做介词的宾于是只用whether 不用if eg, We are talking about whether we'll go on the pinic. b. 引导词与动词不定式或not 连用时，只用whether. eg, Please let me know what to do next. Could you tell me whether u go or not? c. if当如果讲时，引导的是条件状语从句，这时不能用whether. (3).特殊疑问句转化成宾语从句时，引导词用特殊疑问词；引导词后要用陈述句语序。 E.g. Could you tell me what's the matter\wrong with you? 特殊情况：：当do you think后接特殊疑问句转化成宾语从句时，句式结构应为引导词＋do you think＋陈述句语序。 3.宾语从句时态
初中英语语法——三大从句汇总(重点笔记)
初中英语语法——三大从句汇总 在英语中，主要有三大从句，即名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）、形容词性从句（即定语从句）、副词性从句（即 状语从句,包括时间、条件、结果、目的、原因、让步、地点、方式等）。以 下是一些基本的从句的语法知识点 A、定语从句专项讲解与训练 一、定语从句概念 定语从句（attributive clause），顾名思义，就是一个句子作定语从属 于主句。定语一般是由形容词充当，所以定语从句又称作形容词从句。另外， 定语从句是由关系代词或关系副词引导的，故又称作关系从句。 定语从句一般放在它所修饰的名词或代词之后，这种名词或代词被称作先 行词。请看示例： The woman who lives next door is a teacher. 先行词定语从句 在所有的从句中，算定语从句最难掌握，因为汉语里没有定语从句，汉语 里只有定语，而且总是放在名词之前来修饰名词。 二、关系代词引导的定语从句 关系代词代替前面的先行词，并且在定语从句中充当句子成分，可以作主语、宾语、定语等。常见的关系代词有：who, that, which。它们的主格、宾格和所有格如下表所示： 先行词主格宾格所有格 人 who whom whose 物 which which whose of which 人、物 that that — （一）关系代词who, whom和 whose的用法 who代替人，是主格，在定语从句中作主语。例如： An architect is a person who designs buildings. 建筑师是设计房屋的人。 I will never forget the teacher who taught us chemistry in the first
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初中英语语法状语从句大全
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初中英语语法——三大从句之表语从句
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e this old woman before you know, Jeanne. 珍妮，这就是现在这 个老太婆出现在你面前的原因。(前文提到Jeanne对老妇人显得苍老憔悴深感诧异，说话人对她讲述了其中的原因之后，用这一句来进行概括)。// That is why I came. 这就是我来的原因。 下面是两个与“That is why...”形式相似的结构，它们与“Tha t is why...”结构之间的关系要能够辨析清楚： (1)“That is why...”与“That is the reason why...”同义，只不过从语法结构上讲，“That is the reason why...”中why引 导的是—个定语从句，将其中的the reason去掉则与“That is why...”结构一样，例如： That is (the reason) why I cannot agree. 这就是我不能同意 的理由。 (2)“That is because...”句型中从属连词because引导的名词 性从句在此作表语，这也是个常用句型，意为“这就是为什么……/ 因为……”。“That is because...”与“That is why...”之间的不同在于“That is because...”指原因或理由，“That is why...” 则指由于各种原因所造成的后果，例如： He did not see the film last night. That is because he ha d to help his littl e sister with her homework.昨天晚上他没有