時間狀語從句用法解析
1.引導(dǎo)時間狀語從句的引導(dǎo)詞有:①表示某個時刻發(fā)生的動作:when、while、as、once ②表示某個時刻之前發(fā)生的動作:before、until
③表示某個時刻之后發(fā)生的動作:after、since
2. when引導(dǎo)從句時,主從句的動作有先有后,也可以同時進行,從句的動作可以是持續(xù)性的,也可以是短暫的。
eg. When I go to the cinema, the movie had already started. (主先從后)(短暫性)
When I watched movie, I used to eat ice cream. (同時) (持續(xù)性)
When the movie ended, the people went back. (從先主后)
3. while側(cè)重主從句動作的對比,且從句的動詞必須是持續(xù)性的。
eg. While we were chatting she was reading comic.
4. as引導(dǎo)從句時側(cè)重主從句動作同時或幾乎同時進行,從句的動作可以是持續(xù)性的,也可以是短暫的。
eg. Sometimes I watch TV as I am having breakfast.
5. 關(guān)于when的固定搭配:
①…was/were doing…when…(正在做…突然)
②…was/were about to do…when…(剛要做…突然)
③…was/were on the point of doing…when…(剛要做…突然)
④…had just done…when….(剛一…就)
⑤Hardly/Scarcely had…done…when…(剛一…就)