高分网 > 初中学习方法 > 初三学习方法 > 初三英语 >

初中英语知识点总结大全

时间: 如英2 初三英语

  初中英语知识点总结:定语从句

  1. 主要包括主语从句,宾语从句,表语从句和同位语从句. 一般由that 引起,也可由who, what, when, why, which, whom, whether, how 引起.

  2. 主语从句很多情况下都可以放到句子后面,而用代词it作形式上的主语. :

  3. 形式宾语

  4. 由名词性关系代词whatever, whoever, whichever 等引起的宾语从句

  5. whether and if 都能引导从句, 但用法有所不同. 当主语从句直接位于句首时,应用whether,而不用if. Whether 后能直接or not, 但if 不能.

  Whether he will come or not is not known.

  6. 在名词reason后的表语从句必须用that引导, 不可误用 because.

  The reason why he is often late for class is that he has the bad habit of getting up late in the morning.

  二: 定语从句

  1. 引导定语从句的关系词有who, whom, whose, that, when, where, why and which. 在非限制定语从句中, 只可用which, who, whose, where , when., 如果指代前面整个句子, 多用which.

  2. 当引导定语从句的先行词前有all, any, no, little, much, very first 等词, 或先行词前为形容词最高级所修饰时,或先行词为all, anything, nothing, something, everything 时,从句的引导词只能用that.

  3. as 可做引导词引导定语从句, 多和such, the same 连用. As 引导的定语从句也可修饰整个句子, 既可放在先行词后,也可放在句子开头.

  4. 介词+which/whom/whose从句

  5. 代/名+介词+which 从句

  6. 同位语从句和定语从句

  三、定语从句的关系词

  引导定语从句的关系词有关系代词和关系副词,常见的关系代词包括that, which, who(宾格whom,所有格whose)等,关系副词包括where, when, why等。关系代词和关系副词放在先行词及定语从句之间起连接作用,同时又作定语从句的重要成分。

  四、定语从句的分类

  根据定语从句与先行词的关系,定语从句可分为限制性定语从句及非限制性定语从句。限制性定语从句紧跟先行词,主句与从句不用逗号分开,从句不可省去,非限制性定语从句主句与从句之间有逗号分开,起补充说明作用,如省去,意思仍完整。

  五、关系代词的用法

  1. that 既可以用于指人,也可以用于指物。在从句中作主语或宾语,作主语时不可省略,作宾语可省略。例如:

  Mary likes music that is quiet and gentle.玛丽喜欢轻柔的音乐。(that作主语)

  The coat (that) I put on the desk is blue.我放在桌子上的那件外套是蓝色的。(that作宾语)

  2.which用于指物,在句中作主语或宾语,作主语不可省略,作宾语可省略。例如:

  The building which stands near the train station is a supermarket.位于火车站附近的那座大楼是一家超市。(作主语)

  The film (which) we saw last night was wonderful. 我们昨天晚上看的那部电影很好看。(作宾语)

  3.who, whom用于指人,who 用作主语,whom用作宾语。在口语中,有时可用who代替whom, 也可省略。例如:

  The girl who often helps me with my English is from England.经常在英语方面帮助我的那个女孩是英国人。(作主语)

  Who is the teacher (whom) Li Ming is talking to? 正在与李明谈话的老师是谁?(作宾语)

  注意:(1)当定语从句中含有介词,介词放在句末时,who, that, which可省略,但介词在关系代词前时,只能用“介词+which/whom”结构。例如:

  This is the house in which we lived last year.这是我们去年居住的房子。

  Please tell me from whom you borrowed the English novel.请告诉我你从谁那借的这本英文小说。

  (2)含有介词的固定动词词组中,介词不可前置,只能放在原来的位置上。例如:

  This is the person whom you are looking for. 这就是你要找的那个人。

  (3)that 作介词的宾语时,介词不能放它的前面,只能放在从句中动词的后面。例如:

  The city that she lives in is very far away.她居住的城市非常远。

  (4)关系词只能用that的情况:

  a. 先行词被序数词或形容词最高级所修饰,或本身是序数词、基数词、形容词最高级时,只能用that,而不用which.例如:

  He was the first person that passed the exam. 他是第一个通过考试的人。

  b.被修饰的先行词为all, any, much, many, everything, anything, none, the one等不定代词时,只能用that,而不用which.例如:

  Is there anything that you want to buy in the shop? 你在商店里有什么东西要买吗?

  c.先行词被the only, the very, the same, the last, little, few 等词修饰时,只能用that,而不用which.例如:

  This is the same bike that I lost.这就是我丢的那辆自行车。

  d. 先行词里同时含有人或物时,只能用that, 而不用which.例如:

  I can remember well the persons and some pictures that I saw in the room.我能清楚记得我在那个房间所见到的人和一些照片。

  e.以who或which引导的特殊疑问句,为避免重复,只能用that.例如:

  Who is the girl that is crying? 正在哭泣的那个女孩是谁?

  f.主句是there be 结构,修饰主语的定语从句用that,而不用which.例如:

  There is a book on the desk that belongs to Tom. 桌子上那本书是汤姆的。

  (5)关系词只能用which,而不用that 的情况:

  a.先行词为that, those时,用which, 而不用that.例如:

  What’s that which is under the desk? 在桌子底下的那些东西是什么?

  b.关系代词前有介词时,一般用which,而不用that.例如:

  This is the room in which he lives. 这是他居住的房间。

  c.引导非限制性定语从句,用which, 而不用that.例如:

  Tom came back, which made us happy. 汤姆回来了,这使我们很高兴。

  五、关系副词的用法

  (1)when指时间,其先行词表示时间,在句中作时间状语。例如:

  This was the time when he arrived.这是他到达的时间。

  (2)where指地点,其先行词表示地点,在句中作地点状语。例如:

  This is place where he works.这是他工作的地点。

  (3)why 指原因,其先行词是原因,起原因状语作用。例如:

  Nobody knows the reason why he is often late for school. 没人知道他为什么上学总迟到。

  初中英语知识点总结:宾语从句

  为了提高同学们的英语复习效率,中国教育在线整理了初中英语语法之宾语从句,宾语从句是初中英语知识中的重点和难点。下面为大家详细讲解一下。

  一、概述

  宾语从句是主从复合句的一种。主从复合句是由一个主句和一个或一个以上的从句构成的。

  主句是复合句的主体,从句仅仅是主句的一个成分,它从属于主句,不能独立。从句在全句中充当什么成分,就叫什么从句。宾语从句当中的从句在全句中作宾语。

  简单句She knew the teacher(宾语)复合句 She knew that the teacher had seen the film.(宾从)

  二、宾语从句

  1.语序

  无论主句是陈述句还是疑问句,宾语从句都必须使用陈述语序,即“主句+连词+宾语从句(主语+谓语+……)”句式。根据连接词在从句中所担任的不同成分,可分为以下四种:

  1)连接词+谓语。连接词在从句中作主语。常见的连接词有: who,what,which等。如:

  Could you tell me who knows the answer,please?你能告诉我谁知道答案吗?

  The small children don't know what is in their stockings.这些小孩子不知道袜子里有什么东西.

  I don't know which belongs to my father.

  2)连接词+名词+谓语。连接词在从句中作主语的定语。常见的连接词有:whose,what,which,how many,how much等。如:

  He asked whose handwriting was the best in our class.他问我们班上谁的书法最好。

  The teacher asked us how many people there were in the room.老师问我们房间里有多少人。

  3)连接词+主语+谓语。连接词在从句中作宾语、状语或表语。常见的连接词有:who(m),what,which, how many, how much, when, why, how, where, if /whether(在句中不充当任何成分)。如:

  He hasn't decided if he'll go on a trip to Wuxi.他还没决定是否去无锡旅行。

  Could you tell me what I should do with the money ?你能告诉我我如何处理这笔钱吗?

  4)连接词+名词+主语+谓语。连接词在从句中作宾语或表语的定语。常见的连接词有:what,which,how many,how much,how等。如:

  Do you know which class he is in ?你知道他在哪个班吗?

  She asked me if I knew whose pen it was.她问我是否知道这是谁的钢笔。

  2.连接词

  1)当由陈述句充当宾语从句时,用that引导,that无词义,在口语或非正式文体中常省略。如:

  He said that he could finish his work before supper.他说他会在晚饭前完成工作。

  2)当由一般疑问句充当宾语从句时,用if或whether引导,意为“是否”。如:

  I don't know if /whether he still lives here after so many years.

  但在下列情况下只能用whether:

  ① 在具有选择意义,又有or或or not时,尤其是直接与or not连用时,往往用whether(if…or not也可以使用)。如:

  Let me know whether /if he will come or not.(=Let me know whethe or not he will come)

  I don't know whether/if he does any washing or not.(=I don't know whether or not he does any washing.)

  I wonder whether we stay or whether we go.

  ② 在介词之后用whether。如:

  I'm interested in whether he likes English.我关心的是他是否喜欢英语。

  We're thinking about whether we can finish the work on time.

  I worry about whether I hurt her feelings.我担心是否伤了她的感情。

  ③ 在不定式前用whether。如:

  He hasn't decided whether to visit the old man.他尚未决定是否拜访那位老人。

  I don't know whether to go.我不知去否。

  He hasn't decided whether to go by bus or by train.他还未决定是乘公共汽车去还是坐火车去。

  ④ whether置于句首时,不能换用if。如:

  Whether this is true or not,I can't say.这是否真的我说不上来。

  ⑤引导主语从句和表语从句时宜用whether。如:

  Whether she will come or not is still a question.她是否能来还是个问题。

  The question is whether we can catch the bus.问题是我们能否赶上公共汽车。

  ⑥ 若用if会引起歧义时,则用whether。如:

  Please let me know if you like the book.可理解为:a. Please let me know whether you like the book.请告诉我你是否喜欢这本书。B. If you like the book, please let me know.你如果喜欢这本书,请告诉我。

  3)如果宾语从句原来是特殊疑问句,只需用原来的特殊疑问词引导。如:

  Could you tell me why you were late for the meeting this morning?

  3.时态

  含宾语从句的复合句,主、从句谓语动词的时态呼应应包括以下三点内容:

  1)如果主句的谓语动词是一般现在时,从句的谓语动词可根据需要,选用相应的任何时态。如:

  I don't know when he will come back.我不知道他将何时回来。

  He tells me that his sister came back yesterday.他告诉我他姐姐昨天回来了。

  2)如果主句的谓语动词是过去时,宾语从句的谓语动词只可根据需要,选用过去时态即一般过去时、过去进行时、过去将来时或过去完成时的某一种形式。如:

  ①The children didn't know who he was.孩子们不知道他是谁。

  ②He asked his father how it happened.他问他父亲这件事是如何发生的。

  3)如果宾语从句所表示的是客观事实、普遍真理、自然现象或习惯性动作等,不管主句用什么时态,从句时态都用一般现在时。如:

  The teacher said that the earth goes round the sun.老师说地球绕着太阳转。

  4.注意:

  if和when既可以引导宾语从句,也可以引导状语从句,应注意它们在两种从句中的意思和用法的不同。if和when引导宾语从句时,分别意为“是否”和“何时”,其时态应和主句时态相呼应;它们引导状语从句时,意思分别为“如果,假如”和“当……时候”,当主句时态是一般将来时时,其时态用一般现在时。它们常常放在含有状语从句和宾语从句的题干中进行综合考查。如:

  —Do you know when he will come back tomorrow ?你知道他明天什么时候回来吗?

  —Sorry, I don't know. When he comes back, I'll tell you. 对不起,不知道。当他回来了,我将告诉你。

  —I don't know if he will come.我不知道他是否会来。

  —He will come if it doesn't rain.如果不下雨,他会来的。

  ★宾语从句的复合句转化为简单句(六种方法),使其与原句意思相同(或相近)的试题。

  方法一:当主句谓语动词是hope, decide, wish, choose, agree, promise(和主观决定有关)等,且宾语从句的主语与主句主语一致时,宾语从句可简化为不定式结构。例如:

  Li Ming hopes he will be back very soon. →Li Ming hopes to be back very soon.

  We decided that we would help him. →We decided to help him.

  方法二:当主句谓语动词是know, learn, remember, forget, tell(和记忆认知有关)等动词,且主句主语与从句主语一致时,宾语从句可简化为“疑问词+不定式”结构。例如:

  She has forgotten how she can open the window. →She has forgotten how to open the window.

  注:当主句谓语动词是tell, ask, show, teach等动词,且后带双宾语,从句主语和间接宾语一致时,宾语从句可简化为“疑问词+不定式”结构。例如:

  Could you tell me how I can get to the station? →Could you tell me how to get to the station?

  方法三:当主句的谓语动词是order(命令),require(需要)等时,如果主句和从句的主语不一致,宾语从句可简化为“名词(代词)+不定式”结构。例如:The headmaster ordered that we should start at once. → The headmaster ordered us to start at once.

  方法四:某些动词后的宾语从句,可以用介词加动名词(短语)等其他形式简化。例如:

  He insisted that he should go with us. →He insisted on going with us.

  The poor boy doesn’t know when and where he was born. →The poor boy doesn’t know the time and the place of his birth.

  方法五:某些动词后面的宾语从句可转化为“宾语+V-ing形式(作宾语补足语)”结构。例如:Liu Ping found that there was a wallet lying on the ground. → Liu Ping found a wallet lying on the ground.

  方法六:动词seem后的宾语从句,也可以用不定式(短语)来简化,但句型需要进行适当的变化。例如:It seemed that the boys were going to win. →The boys seemed to win.

  除上述方法外,还有一些特殊句式的转化。例如:

  I found that it was difficult to learn English well. →I found it difficult to learn English well.

  Soon we found that the ground was covered with thick snow. →Soon we found the ground covered with thick snow.

  They found that the box was very heavy. →They found the box very heavy

看过“初中英语知识点总结 ”

42794