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1、在初中英语中，主要有三大从句，即宾语从句、定语从句、状语从句（包括时间、条件、结果、目的、原因、让步、地点、方式等）。小简老师今天跟大家分享的就是这三个从句的主要语法点，赶快看起来吧！小简老师已为大家备好电子打印版，文末附电子打印版免费领取方式，想要获取电子打印版请拉到文末。1宾语从句一、定义在句子中起宾语作用的从句叫做宾语从句。二、连接词that: I think that you can pass the exam.Whether/if: I dont know what the word means.“Wh”: I dont know what the word means.I dont
2、 know where he found the book.只用whether的情况：1. 与or not连用：I dont know whether its raining or not.2. 与动词不定式连用：He doesnt know whether to accept the invitation.3. 连接词前有介词时：It depends on whether he is coming.三、时态1. 主句是一般现在时态，从句根据实际情况而定(各种时态均可)She wants to know what he has done for the exam.2.主句是一般过去时态，从句用
3、相应的过去的时态。1）She said that she was a student.2）She said that she would fly to Japan in a week.3）She said that she had finished her homework already.3. 如果宾语从句说的是客观真理、自然现象或事实时，这时宾语从句要用一般现在时态。The teacher said that the earth goes round the sun.2定语从句一、定义在复合句中修饰名词、代词的从句叫定语从句。二、先行词先行词指人 who /that先行词指物 which/
4、 that定语从句一般紧跟被修饰的名词或代词（即先行词）后三、关系代词关系代词代替先行词在句子中担当成分，所以从句中不可再出现其他代替先行词的代词四、翻译方法 “. 的”Whom:先行词指人，则代替先行词在定语从句中充当宾语（包括介词的宾语）, 与who的区别是如果前面带介词则必须用whom1. This is the teacher whomwho we like best.2. I dont like the boy to whom you are talking.Whose :指人或物，作定语，表示 “的”eg: Harry is the boy whose mother is our
5、math teacher.关系代词只能 that 的特殊情况：1.先行词前有序数词修饰时：This is the first gift that my parents bought me.2.先行词前有形容词最高级修饰时：This is the most exciting film that I have ever seen.3. 先行词是不定代词something,anything等时.e.g. Isthereanythingthatyouwantinthisshop4. 先行词是人和物时, 用that.e.g. Hetalkedaboutsomewritersandbooksthat we
6、reunknowntousall.5. 先行词被all , little , the only , the very(就是，正是), the last 等词修饰时,只能用thate.g. This is the last place that I want to visit.6. 特殊疑问句以who 或which 开头，只能用that引导.Who is the girl that is making a speech on the platform?当关系代词前使用介词时：物+介词+which ; 人+ 介词 + whom当关系代词前使用介词时：e.g. 1. This is the trai
7、n by which we went to Beijing.2. This is the teacher to whom my mother is talking.3状语从句一、定义在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语（包括非谓语动词）、定语或状语，或是整个句子。二、状语从句一般分为八大类时间状语从句 地点状语从句原因状语从句 目的状语从句结果状语从句 条件状语从句方式状语从句 让步状语从句1. 时间状语从句When -当时候,通常指某一特定的时间点，主句与从句的动作同时发生。When I opened the window, I saw him come up.When
8、-正在的时候，突然。通常主句是进行时或 be about to 时，在翻译的时候，when 可以译成没想到或突然。I was walking along the street , when I met him.When 当从句是进行时，主句是一般时，往往表示不满。Someone knocked at the door when I was having breakfast.When=afterWhen the children had gone to bed, she began to prepare her lessons.While-在期间，往往指一段时间。While we were in
9、America, we saw him twice.While -表示一种不满情绪，意思是这边在干某种重要的事，而另一边在享受等。We are cleaning the classroom while they are playing the football.As- 一边一边, 随着She was doing her homework as she was listening to the music.As - 当时，指一个动作紧接着一个动作发生，从句通常用进行时。As I was going out, it began to rain.The moment- 一就=as soon as ,
10、 immediately,-Did you remember to give Mary the money you owed her?-Yes, I gave her the moment I saw her.Not until-直到才He didnt leave the office until he finished the work.Before-在之前The passengers should arrive at the airport an hour before the flight departs.After-在 之后The customer left the ticket co
11、unter after he had a quarrel with the ticket agent.Since-自从, 通常主句用现在完成时I have never been there again since I graduated from the university.It is just a week since we arrived here. As soon as-一就Jack went to school as soon as he got well.No sooner than-一就no sooner than 用于句首要求倒装Hardly whenScarcely when
12、No sooner had he arrived than he went away again.Once -一但就Once you see him, you will never forget him.Every time, each time每次whenever每当Each time he came to town, he would visit our school.2. 条件状语从句引导状语从句的连接词有：If如果, unless除非, as long as只要, As (so) far as - 据所知，in case万一, provided that假如, on condition
13、 that若是，以为条件If-如果If you dont hurry up, you will miss the plane.Unless- 如果不, 除非=if notWe cant get there on time unless we book the earliest flightAs long as- 只要We will succeed as long as we keep on trying.As (so) far as- 据所知As far as I know, he speaks English very well.In case- 假使, 如果The plane cannot
14、 take off in case it rains.Provided that如果,有时省略 thatThe plane will be in good condition provided that it is taken care of carefully.On condition that- 条件是He said that he would come to the meeting on condition that no one asked him to speak.注:主从句的动作发生在将来时，则主句用将来时, 从句用一般现在时。If he arrives tomorrow, I will be waiting for him at the airport.3. 地点状语从句地点状语从句只有两个连词: Where, whereverWhere- 在地方Where there is a will, there is a way.Wherever- 无论哪里Wherever you are, I will be
