题目内容
18．She ____ until his mother agrees．（ ）| A． | leaves | B． | will leave | C． | doesn't leave | D． | won't leave |
分析 直到她的母亲同意，她才会离开．
解答 答案：D．句意"直到她的母亲同意，她才会离开．"not…until指的是"直到…才…"，not…until 引导的时间状语从句，体现主将从现的原则，根据本题从句是一般现在时，主句应该用一般将来时，所以排除A、C．因为是not…until句型，应该用will的否定形式，所以排除B．故选D
点评 在时间状语从句中，注意主将从现的原则以及对not…until 句型的理解和掌握．
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