Section Ⅳ　Grammar & Writing

　　时间状语从句及省略

　　阅读下列句子并体会黑体部分的用法

　　1．Some of the DJs began speaking and shouting while the music played.

　　2．"The moment I heard it，"he said，"I knew it was a completely new kind of music."

　　3．The first time that rap artists recorded their music，musicians recorded the backing tracks (the music without the singing) in the studio and the rappers added their vocals later.

　　4．No sooner had he reached home than it began to rain.

　　5．Hardly had I entered the room when the phone rang.

　　6．-Do you want to go to the movie tonight?

　　-I hope to (go to the movie)．

　　7．What do you think of the film (that) you saw yesterday?

　　8．While (I was) at college，I began to know him，a strange but able student.

　　9．Bob has done his homework，but Tom hasn't (done his homework)．

　　10．He accepted the suggestion that he (should) go there by train.

　　一、时间状语从句

　　在复合句中起时间状语作用的句子称为时间状语从句。时间状语从句常用when，while，as，until，since或表示时间意义的名词短语等引导。

　　1．when，while，as 的用法

连词 用法 when 从句谓语用延续性动词和非延续性动词均可，主、从句谓语表示的动作可同时或先后发生 while 从句谓语用延续性动词 表示两个延续性动作同时发生且具有对比意味，或一个动作发生在另一个动作进行的过程中