题目内容
17．-Mum，I'm dying for food．Can we have dinner now？-Dear，let's wait your dad comes back．（ ）
| A． | when | B． | after | C． | until | D． | while |
分析 妈妈，我很想吃饭，现在可以吃饭了吗？亲爱的，让我们等到爸爸回来后再吃吧．
解答 答案：C 根据前文let's wait ，wait这是一个延续性的动词，那么这个句子（主句）常常用肯定式，又根据上文妈妈，我很想吃饭，现在可以吃饭了吗？推测本题的意思是让我们等到爸爸回来后再吃吧．故用连词until直到，A何时，B之后，D当…的时候．
点评 在含有until引导的时间状语从句中，如果句子（主句）的谓语动词是延续性动词（即动作可以延续一段时间的动词），如：work，live，stay，study，play，wait等，那么这个句子（主句）常常用肯定式，表示动作一直延续到until所表示的时间为止．
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