My parents have promised to come to see me before I ______ for Africa.A.have lef
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My parents have promised to come to see me before I ______ for Africa.A.have left | B.leave | C.left | D.will leave |
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答案
B |
解析
试题分析:句意,我父母已经答应在我去非洲之前来看我。before引导的时间状语从句,表示主句的动作发生在从句的动作之前。主句用现在完成时态,从句只能用一般现在时表示将来意义,故选B。 点评:before引导的时间状语从句,表示主句的动作发生在从句的动作之前。主句用现在完成时态,从句只能用一般现在时表示将来意义。 |
举一反三
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