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as soon as后面的时态

来源：学生作业帮 编辑：搜搜做题作业网作业帮 分类：英语作业 时间：2024/06/14 12:38:19
as soon as后面的时态
1.I am going to watch TV as soon as I finish my homework.
2.He is going as soon as he has had dinner.
都是新概念英语习题上的句子.为什么两句话里as soon as 后面的时态不一样?
第一句用finished对吗？
as soon as后面的时态
英语中的时态一般分为两种：现在时态,过去时态.
在时间状语从句中,主句用一般将来时,从句用一般现在时.
as soon as 一……就……,引导的就是时间状语从句；
I am going to watch TV as soon as I finish my homework.在此句中,I am going to watch TV 就是一般将来时,I finish my homework这的finish是一般现在时.用finished 肯定不对.英语中的时态讲究主从句时态一致,除非从句所陈述的为客观事实或真理.如：
The teacher said the sun is bigger than the earth.
He is going as soon as he has had dinner.在此句中,he has had dinner为现在完成时,同样属于现在时态.
as soon as 后面的时态 as soon as 后面加什么时态 as soon as时态 英语的时态 as soon as as soon as是什么时态的标志 as soon as 后面是过去式,那么主句的动词是什么时态? as soon as 前后时态 as soon as是什么时态 as soon as +什么时态? as soon as引导时间状语从句的时态结构 as soon as前后的动词用什么时态 as soon as 的用法,有规定时态么