as soon as引导什么从句 as soon as的用法

as soon as引导时间状语从句,表示过去,也可以表示将来 。as soon as的意思是:一……就……;一经;不久后,一会儿 。例句:As soon as he got inside, the dog shook himself.他一进来,狗就开始摇头摆尾 。

as soon as引导什么从句 as soon as的用法


as soon as 后面接什么时态
as soon as这个短语比较常用,口语和书面语都可以 。它的特点是在句子中的位置比较灵活,而且可以用于各种时态 。当指未发生的动作时,时态规律是“主将从现”,即主句用一般将来时,从句用一般现在时代替一般将来时 。如果强调过去发生的两个动作有先后关系,从句谓语动词可以用过去完成时 。
【as soon as引导什么从句 as soon as的用法】
as soon as引导什么从句 as soon as的用法


as soon as的用法
1、指未发生的动作,规律是:主句一般将来时,从句用一般现在时代替一般将来时 。如:I will tell him the news as soon as he comes back.有时,为了特意表达刚刚完成某事就如何如何,需要用现在完成时 。如:I will go with you as soon as I have washed my face.
as soon as引导什么从句 as soon as的用法


2、指紧接着发生的两个短动作,主从句都用一般过去时 。如 He took out his English books as soon as he sat down.也有从句和主句都用一般现在时的情况 。如:As soon as he finishes his classwork, he runs out of the class.他一做完课堂作业,就跑出了教室 。

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