为什么一些英语句子里用一般现在时表将来时?比如:We won't go to the Great Wall if it snows tomorrowThe next time you meet his parents tell them I want to see them as soon as possibleThe key will be left on the table whrn I leaveOur classes Begins at7:30 tomorrow morningThe train leaves at five this afternoon不是一个句子中前后时态要一致的吗?为什么前面是将来时后面用一般现在时?

问题描述:

为什么一些英语句子里用一般现在时表将来时?
比如:We won't go to the Great Wall if it snows tomorrow
The next time you meet his parents tell them I want to see them as soon as possible
The key will be left on the table whrn I leave
Our classes Begins at7:30 tomorrow morning
The train leaves at five this afternoon
不是一个句子中前后时态要一致的吗?为什么前面是将来时后面用一般现在时?

前3个是状语从句,尤其在时间或条件句中,用一般现在时表示将来.
第四个和第五个是下列动词:come,go,arrive,leave,start,begin,return的一般现在时表将来.这主要用来表示在时间上已确定或安排好的事情.