中考英语知识点：引导状语从句的从属连词

　　1) 连接时间状语从句的从属连词

　　before 在···之前 The war had been over before he came to China.

　　after 在···之后 He came to China after the war was over.

　　since 自从 I have lived in this city since I was born.

　　when/while 当··· The teacher entered the classroom, when all the students were playing

　　When I came into this room, I found him lying bed asleep (while后接的动词是延续性的动词)

　　as 当··· I saw her as I was getting on the bus.

　　till/until 直到 I didn’t go to sleep until/till I finished my homework.

　　as soon as 一···就··· As soon as he saw the policeman, the thief run away.

　　2) 连接地点状语从句的从属连词

　　where 在哪里 There were lots of parks where I lived.

　　3) 连接原因状语从句的从属连词

　　because 原因,用于解释某事的原因，动机，强调直接原因和因果关系 I do it because I like it.

　　for 表因为，表间接的原因，用于说明，解释 I soon went to sleep, for I was tired

　　since 表原因，比because弱，比as强，表一种已知的，显然的理由，常译为“既然

　　as 表原因时，意义最弱 As you are in poor health, you should do more exercises

　　4) 连接结果状语从句的从属连词

　　so···that··· 如此···以至于··· He is so kind that everybody likes him.

　　such···that··· He is such a kind man that everybody likes him