求助!manhattan 第七章,现在完成时的最后一句话看不懂!!

pandah0522 · 发表于 2012-9-1 09:20:35

Finally, the idea of completed action can be used simply to place a Present Perfect action earlier than another action in –ing forms, infinitives or subordinate clauses.

Right: She WILL PAY you when you ASK her.
(the time of will pay = the time of [will] ask; note that the future will is often dropped in subordinate clauses)

Right: She WILL PAY you when you HAVE TAKEN out the garbage.
(the time of will pay is LATER than the future time of have taken)

是不是就是完成时可以表达在v-ing还有不定式和从句中另一个动作之前发生,但是第二个例句的动作不是在主句的动作发生之前发生嘛,就不是从句了...不懂,求大侠们解释!!

pandah0522 · 发表于 2012-9-1 12:00:37

UP!!求教~~

pandah0522 · 发表于 2012-9-1 17:39:28

求助!manhattan 第七章,现在完成时的最后一句话看不懂!!

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