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重点3 until 引导的时间状语从句 …until….“直到……时候”；not…until…“直到……才……” 例句： You are to stay until/till your mother comes back. The meeting was put off until ten o’clock. The villagers didn’t realize how serious the pollution was until all the fish died in the river. →Not until all the fish died in the river did the villagers realize how serious the pollution was. He didn’t go to bed until his mother came back. →It was not until his mother came back that he went to bed.（强调句） Not until he failed in the exam did he realize that he had wasted much time playing computer games. Not until his son came back from school did he go to bed. 练习： 句型转换 （强调until 从句） 1. They didn’t stop until they succeeded at last. （强调until 从句） 2. We didn’t give up our efforts until we saved everyone injured in the accident.（强调until 从句） 3. The people there didn’t break up until the police arrived.(按照要求改写句子) Not until___________________________________________________ 4.The audience didn’t leave the theater until the rain stopped. (按照要求改写句子) Not until __________________________________________________ 选择最佳选项 1. It was not until I came here _____I realized this place was famous for not only its beauty but also its weather. | 
