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1、 第 1 页 共 4 页一一. .概念概念连词是用来连接词,短语,从句或句子的词.连词不作成分. 二二. .相关知识点精讲相关知识点精讲 1.1.表示并列关系的连词有表示并列关系的连词有：and, bothand, not only but also和 neithernor等 1)and：和，并且 A：基本用法： “and”表示 “和” 、 “并且”的意思，用来连接对等关系的字和字，片语和片语，句子 和句子。I enjoy basketball , football and table tennis. The weather becomes colder and colder. B:特别用法：
2、来源:学科网 祁使句后连接 and，有条件句作用，此时 and=if you,youll Go straight on, and youll see the library.=If you go straight on, you will see the library. 2)bothand既也,(两者)都 A、bothand构成的词组作主语时,谓语动词用复数。Both Jim and Kate are from England. B、bothand否定句表示部分否定。You cant speak both German and English. Both my father and my m
3、other arent doctors. 3)neithernor:既不也不 neithernor连接两个并列主语时,谓语动词靠近哪个主语就与哪个主语保持 “人称” 和 “数”的一致，即采取就近原则。Neither I nor he has seen the play before. 4)not onlybut also:不但而且来源:学科网 ZXXK来源:学 不是就是；要么要么来源:Zxxk.Com A.eitheror连接两个并列主语时,谓语动词靠近哪个主语就与哪个主语保持 “人称” 和 “数”的一致，即就近原则。Either you or I am right.Does either s
4、he or they like English? B.由 eitheror引导的否定句是完全否定。She isnt either a student or a teacher. 3)whetheror不管还是She is always cheerful, whether at home or at school. 4.4.表示因果关系的并列连词有表示因果关系的并列连词有：for(因为)，so(所以)。He is not at school today, for he has a bad cold. It was late, so I went home. 5.5.引导时间状语从句的从属连词有引
5、导时间状语从句的从属连词有：before, after, when, while, as, till, until, since, as soon as 等。After they had planted their crops, they took a rest. We have learned six lessons since he began to teach us. As soon as he gets to Beijing, hell call me. 1) when, while, as 都表示“当时” ，when 从句谓语动词既可以是瞬间动词也可以 是延续性动词，可用于主从句动作
6、同时发生或从句动作先于主句动作发生。while 从句 谓语动词只能是延续性动词，侧重主从句动作同时发生。as 引导一个持续性动作，多用 于主从句动作同时发生，强调“一边一边” 。When I came in, my father was cooking. I came in when/while my father was cooking. He sang as he walked. 2)until 用法：当主句谓语动词是延续性动词时，主从句都用肯定式，译为“直到为 止” ；当主句谓语动词是瞬间动词时，主句用否定式，从句用肯定式，即 not.until, 译为“直到才” 。 Mr. Green
7、 waited until his children came back.(格林先生一直等到他的孩子们回 来) Mr. Green didnt go to bed until his children came back. (格林先生直到他的 孩子们回来才睡觉) 6.6. 引导条件状语从句的从属连词有引导条件状语从句的从属连词有：if(如果), unless(除非，如果不)等。If you dont go soon, youll be late.=Unless you go soon, youll be late. 7.7.引导原因状语从句的从属连词有引导原因状语从句的从属连词有 becaus
8、e,because, as,as, sincesince 等等。 because“因为”语气最强,回答 why 提问时只能用 because，其引导的从句可放在句首 或句末；as“由于” 、since“既然”语气不如 because 强，引导的从句常置于句首； for 是并列连词，语气最弱，对前面分句加以解释或补充说明，其引导的分句常置于句 末且用逗号隔开。He didnt go to school because he was ill. As it was raining, we went there by bus.第 3 页 共 4 页Since everybody is here, le
9、ts begin. It must have rained last night, for the ground is wet. 注意： because 与 so 不能同时使用。 8.8.引导让步状语从句的从属连词引导让步状语从句的从属连词有：although/though(虽然，尽管), even though/if (即 使)Although/ Though it is a very young country, it is very rich. Even if/ though you were here yesterday, you couldnt help him. 注意：althou
10、gh/though 引导的从句不能与 but 连用，但可与 yet, still 连用。 9.9.引导目的状语从句的从属连词引导目的状语从句的从属连词有 so that 和 in order that(以便，为了)等。The teacher spoke loudly so that /in order that we could hear him clearly. 10.10.引导结果状语从句的从属连词引导结果状语从句的从属连词有：so that(结果是)和 so/suchthat(如此以至于)等。It was very cold, so that the water in the bowl
11、froze. He got there so early that he got a good seat. It is such a heavy box that nobody can move it. 11.11.引导比较状语从句的从属连词引导比较状语从句的从属连词有： asas(与一样),not as/so as(不及， 赶不上),和 than(比)等。I know you better than she does.He works as carefully as she.I cant run as/so fast as you. 12.12.引导名词性从句的从属连词引导名词性从句的从属连
12、词有：that 和 if/whether(是否)等。 We know that the earth goes around the sun.(宾语从句) I wonder if he has received my e-mail. (宾语从句) Whether hell go there hasnt been decided.(主语从句) 注意：在时间状语从句和条件状语从句中，如果主句是将来时，从句要用一般现在时。Ill go on with the work when I come back tomorrow. He wont come unless he is invited. 三三. .
13、巩固练习巩固练习 1、I dont like reading watching TV. What about you? “I dont like reading all day, I like watching TV plays.” Aand, butBand, and Cor, andDor, but 2、You wont know the value(价值) of the health you lose it. AuntilBafterCwhenDbecause 3、We bought Granny a present, she didnt like it. Abut Band CorDs
14、o 4、Study hard, you will pass the exam. Aso BforCbutDand 5、Put on more clothes, youll catch cold. AandBforCorDbut 6、My shoes are worn out, I need new ones. AsoBifCbecauseDand 7、He ran fast he won the race. Aenough to Bso thatCtootoDbothand 8、He is only ten months. He can read write.第 4 页 共 4 页Aeithe
15、rorBneithernorCbothandDsothat 9、She said she might come Saturday Sunday . AneithernorBnitheror CtootoDsothat 10、If Tom Mike asks for their car, tell him to come tomorrow. AorBandCwithDbut 11、It was already ten oclock we got to the museum this morning. AthatBwhenCifDfor 12、Its a long time we met last. AsoBafterCsinceDbefore 13、That maths problem is difficult nobody can do it. AtootoBverythat CsothatDvery but 14、Ill give her the message she comes back. Asince BbeforeCuntilDas soon as 15、 the teacher
