1、连词连词：主要作用是主要作用是: 连接连接单词与单词单词与单词、短语与短语短语与短语、句子与句子句子与句子。它是。它是虚词虚词,不能在句子不能在句子中作成分中作成分.1.并列连词并列连词 2.从属连词从属连词用来连接平行的词，词组或句子。常见的用来连接平行的词，词组或句子。常见的并列连词有：并列连词有：(1)表表并列关系并列关系的的and, bothand, not onlybut also, neithernor, as well as等。等。(2)表表选择关系选择关系的的or, eitheror等。等。(3)表表转折关系转折关系的的but, however, yet等。等。(4)表表因果关
2、系因果关系的的for, so等。等。一一.并列连词并列连词and 和，并且和，并且例如例如: 1)I often have bread and milk for breakfast. 2) On Sundays I wash clothes and look after my daughter. 3) Lucy is kind and she likes helping others.2. both. and 既既.又又 例如例如: Both I and she like sleeping. neithernor 既不既不也不也不 (连接主语时要就近原则连接主语时要就近原则)例如例如: Nei
3、ther you nor Lucy works hardnot only .but also 不但不但而且而且(连接主语时要就近原则连接主语时要就近原则)例如例如: Not only Mike but also his sister has been to Londonas well as 既既又又(也也), 不仅不仅 而且而且例如例如: Lily can sing as well as dance.注意注意: 1.在否定句中把在否定句中把and 改为改为or 例如例如: There is no air or water on the moon.1. or, 或，否则或，否则Get up ea
4、rlier, or you will miss the early bus.2. eitheror 要么要么.要么要么(遵守就近原则遵守就近原则)Either you or he has the ticket. 注意注意: or = if you dont , you will.If you dont get up earlier , you will miss the early bus. 1. but 但是但是He lives in Beijing now, but his home is in Zhejiang. 3. yet 可是，然而可是，然而,We have studied Eng
5、lish for ten years, yet we can t speak it well. 2.however, 但是但是He lives in Beijing now, however, his home is in Zhejiang.1. for 因为因为He didnt go to school, for he was ill.2. so 所以所以He was ill, so he didnt go to school.(1)(1)引导时间状语从句的引导时间状语从句的after, before, when, while, after, before, when, while, as,
6、 until, till, since, as soon asas, until, till, since, as soon as等。等。(2)(2)引导条件状语从句的引导条件状语从句的if, unlessif, unless等。等。(3)(3)引导原因状语从句的引导原因状语从句的because, as, sincebecause, as, since等。等。(4)(4)引导目的状语从句的引导目的状语从句的so that, in order thatso that, in order that等。等。(5)(5)引导让步状语从句的引导让步状语从句的though, although, even
7、ifthough, although, even if等。等。(6)(6)引导结果状语从句的引导结果状语从句的sosothat, suchthat, suchthatthat等等(7)(7)引导比较状语从句的引导比较状语从句的than, asthan, asas, less.thanas, less.than等。等。(8)(8)引导宾语从句的引导宾语从句的 if , whether, whenif , whether, when等。等。二二. . 从属连词从属连词从属连词用来引导从句。常见的从属连词有：从属连词用来引导从句。常见的从属连词有： 1. after 在在-之后之后 I will g
8、ive you a ring after he comes back.3. when 当当-的时候的时候 I will give you a ring when he comes back.4. as soon as 一一-就就 I will give you a ring as soon as he comes back. 2.before 在在-之前之前 I will give you a ring before he leaves here. 5.until/ till 直到直到-才才 I will not leave here until he comes back.6. since
9、自从自从- I have lived here since I came to Hongjia.7. as. 当当时候时候, 一边一边.一边一边.例如例如: I met my old friend as I was walking in the street.8. while 在在.时候时候 ,而而例如例如: While I was doing my homework ,my brother was sleeping . 2. unless 除非除非I will go there with you unless you agree with me.I will go there with yo
10、u unless my mother tells me not to . 1.if 如果如果I will go there if it doesnt rain tomorrow.Please tell me if you know the answer. 2. as 由于，因为由于，因为 语气最弱语气最弱As it is raining heavily, youd better stay at home.1. since 既然既然，自从，自从Since water is very important ,we must try our best to protect it.3. because
11、因为因为 语气最强语气最强 Lucy didnt go to school because she was ill ysterday. 2. in order thatThe teacher speaks slowly in order that we could catch her. 1.so that 为了为了The teacher speaks slowly so that we could follow her. 2.even if / even though 即使即使I will go and help them even though I stop my work. 1.thoug
12、h /although 虽然虽然Though he is poor, he is happy most of the time. 3.as if / as though 好像好像He talked as though he cared little for money.1. so .that 太太.以致于以致于He ran so fast that he soon caught up with the others.2. such .that 太太.以致于以致于It is such an interesting film that I want to see it again.The film is so interesting that I want to see it again.1.as.as例如: I am as tall as you are2. not as/soas例如; She is not as/so kind as you are3. .than例如例如: I talk more than she does.4. less than I am less tall than you.
