题目内容
7．直到做完作业，妈妈才让我看电视．My motherdidn'tletmewatchTVuntil I finished my homework．
分析 didn't let me watch TV until．
解答 答案：didn't let me watch TV until．结合句意这里是说过去的事情用一般过去时，表示直到…才用not…until，让某人做某事let sb do sth，借助于did构成否定，看电视watch TV，故答案是didn't let me watch TV until．
点评 not…until"直到…才"表示直到某一时间，某一行为才发生，之前该行为并没有发生．用在否定句中，主句中的谓语可以是延续性的也可以是短暂性动词．1．I studied Englis until 9 o'clock last night．我咋晚学英语一直学到9点钟．（表示9点前一直在学）2．I did not study Englis until 9 o'clock last night．我咋晚直到9点钟才学英语．（表示9点才开始学）．
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