中考英语重要短语的用法及区别：not … until until

　　中考英语重要短语的用法及区别：not … until, until

　　not … until 直到…才… (主句动词是短暂性动词)

　　(1)He didn't go to bed until his mother came back..

　　until 一直到… (主句中使用延续性动词)

　　(2)I study hard until it is midnight every day.

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