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我看完这篇文章之后，他给我打了电话。( 从句动作发生在主句之前，注意时态表达，只能用when ) When I got to the cinema, the film had begun. (当)我到了电影院时，电影已经开演了。(从句的动作发生在主句之后，只能用when,并要注意时态) He was about to leave, when the telephone rang. 他正要离开，忽然电话响了。( 此时不能放在句首。主句动词一般表达 "正在""即将". while, as不能代替 She thought I was talking about her daughter, while, in fact, I was talking about my daughter. 他以为我在谈她女儿，然而，实际上在谈论我女儿。(表转折，对比，when, as都不能代替它) While the alien was buying a souvenir, the girl called the police. 外星人买纪念品时，那女孩给警察打了电话。(表示主句，从句的动作同时发生，while后引导的状语从句的动词必须是延续动词不能是点动词，因为它表示较长时间) Mother was worried because little Alice was ill, especially as (when/ while) father was away. 妈妈担心，因为小爱丽丝病了，特别是他父亲不在家的时候。(此时as ,when, while可通用) (责任编辑：admin) |