英语从属连词的用法专题学习精编 英语从属连词的用法如下： 引导名词性从句，在句中均不能充当任何句子成分，其中that没有词义，仅起引导从句的作用；whether/how有词义。 引导时间状语从句，表示“当…时候”或“每当”等时间连词。主要有when、while、as、whenever等。 引导条件状语从句，主要有if、unless、as long as、in case等。 that 用于引导宾语从句，引导从句时无意义，常省略。 He told me（that）he won’t be late.他告诉我说他不会迟到的。 though/although (虽然，尽管)，even if/though (即使) 可用于引导让步状语从句，though/although 不能与but连用。 Though he has a cold,he still goes to school.=He has a cold,but he still goes to work.尽管他感冒了，他仍然去上学了。 if, whether (...or not)(是否) 可用于引导宾语从句，不可省略。 I don’t know whether it will rain or not today.我不知道今天会不会下雨。 if (如果), unless (除非；如不), as long as(只要) 引导条件状语从句。 Thought he is very old，he still teaches himself English.尽管他年龄很大，他仍然自学英语。 人教高中英语单词mp3 人教版高中英语单词 人教版初中英语mp3 because (因为), as (鉴于;由于), since(由于，既然) 用于引导原因状语从句。 I don’t want to go outside because I am too tired.我不想外出因为我太累了。 so...that, such...that  (如此……以至于……) 可用于引导结果状语从句。 The scenary here is so beautiful that I don’t want to leave.这儿的风景太美了，以至于我不想离开了。 since自从，until/till直到，after在……之后，before在……之前，when当……时候，while当……时侯，as soon as一……就……，whenever无论何时 用于引导时间状语从句。 When I arrived there, it was raining.当我到那里时，天正在下雨。 as if/as though (仿佛；好像) It seems  as if  it is going to rain.好像将要下雨了。 so that（以便） in order that（为了） in case(以防) I get up early so that I won’t be late for class.我起得很早，这样我上课不会迟到。 as...as...(和……一样……),  not so/as...as... (和……不一样……) 用于引导比较状语从句。 He is as smart as his brother.他和他的哥哥一样聪明。 because, since, as 连词 意义 例句 because 表示造成某种情况的直接原因，语气最强，常用来回答由why引导的问句，其从句的位置通常在主句的后面。 He has to leave because it is too late.因为太晚了，他不得不走。 since since语气比as稍强，不表示直接的或根本的原因，而是一种已知的或非常显然的理由，since引导的从句通常位于主句之前。 Since everyone is here, let’s start.既然大家到齐了，我们就出发吧！ as as是从属连词，表示原因时，语气最弱，所说的原因比较明显或是已知的事实，它引导的从句一般位于主句之前。 We all like her as she is kind.我们都喜欢她，因为她善良。   I. 用适当的连词填空。 1. Jim didn’t come to school yesterday __________ he was ill. 2. They haven’t decided __________ they will go or not. 3. He spoke __________ fast __________ I couldn’t follow him. 4. The children were walking along the river __________ they were singing happily. 5. Put on more clothes, __________ you’ll catch a cold. 6. It’s two years __________ he left school. 7.—Would you like to go with us? —I’d love to, __________ I have to help my father do some housework. 8. Air is __________ a liquid __________ a solid. 9. He will go to see his grandpa __________ __________ __________ he gets through with his homework. 10. Go to Uncle Wang for help, __________ your work can be finished on time. 答案 1. because 2. whether/if 3. so, that 4. while/when/as 5. or 6. since 7. but 8. neither, nor 9. as soon as 10. and II.按要求转换句型。 1. Mr. Hu left the room after he finished the work. (改为同义句) Mr. Hu __________ __________ the room __________ he finished the work. 2. He and his parents have gone to Wuhan. (改为同义句) __________ he __________ his parents have gone to Wuhan. 3. The problem is quite difficult I can’t work it out. (改为同义句) The problem is __________ difficult __________ I can’t work it out. It is __________ __________ difficult problem __________ I can’t work it out. 4. He said he would see his teacher at once when he got to Shanghai. (改为同义句) He said that he would see his teacher __________ __________ __________ he got to Shanghai. 5. My uncle has been away from Hefei for ten years. (改为同义句) It’s ten years __________ my uncle __________ Hefei. 答案 1. didn’t leave, until/till 2. Both; and 3. so; that; such a; that 4. as soon as 5. since; left III.选词填空(句子选词填空)。 as          such... that because      since        when so that so... that until      as soon as while 1. We were swimming in the river __________ it started to rain. 2. Sports, build our body __________ reading builds our mind. 3. It’s __________ a big fish __________ it needs many people to catch it. 4. __________ you have grown up, you should not depend on your parents. 5. The new-type digital camera is expensive __________ few people can afford it. 6. We didn’t go shopping __________ my mother came back. 7. __________ it heard the sound of my father’s car, Dog Buddy rushed to meet him at the gate. 8. We decided to go window-shopping __________ we could see if there was anything on sale. 9. I feel that pandas are the most important animals __________ there aren’t very many of them. 10. I remember the whole thing __________ it happened yesterday. 答案 1. when 2. while 3. such, that 4. Since 5. so that 6. until 7. As soon as 8. so that 9. because 10. as