多读句子和翻译。例如:I will call you as soon as I arrive in Beijing. 我到北京就将给你打电话。(这是由as soon as引导的时间状语从句,从句中的谓语动词arrive是一般现在时,表示一般将来时,绝不可用will arrive)。As soon as I have finished this work, I will have gone home. 我一完成此工作,就回家。(从句中的谓语动词用现在完成时have finished,表示将来完成时,绝不可用will have finished)。If he comes back, please let me know.如果他回来了,请通知我。(从句中的谓语动词用comes back,表示一般将来时,绝不可用will come back)