英语句型主将从现的结构

将来时+when+一般现在时
除了when,if之外还有什么词?

主将从现是指在时间状语从句和条件状语从句中,如果主句是一般将来时,从句用一般现在时替代一般将来时。

常见的有以下四种情况:

一、条件状语从句的主句是一般将来时,那么从句常常用一般现在时
如: When I grow up, I’ll be a nurse and look after patients
我长大后要当一名护士,照顾病人

二、如果主句是祈使句,那么从句通常要用一般现在时
如:Don’t laugh at me when I make a mistake.
我犯错误的时候不要笑话我。

三、如果主句是含有情态动词的一般现在时,根据需要从句多用一般现在时
如:You should be quiet when you are in the reading room
在阅览室时应保持安静

四. 如果if的条件状语从句遇到变换间接和直接时 , 祈使句应用not to....
如; She said not to close the window
常见的时间状语从句的连词有:as soon as,when,while ,as,until等
主将从现说的是在含有时间状语从句和条件状语从句的主从复合句中,如果主句的时态是一般将来时,那么从句要用一般现在时。
例如:
I will tell him about it when he comes.
If it is fine tomorrow, we will go outing.
如果主句的时态是过去将来时,那么从句要用一般过去时。
例如: He said that he would have another try if he had the chance.
I knew he could help me if he was free the next day.
主要标志词有:if unless until when as soon as
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第1个回答  2013-08-26

主将从现是指在时间状语从句和条件状语从句中,如果主句是一般将来时,从句用一般现在时替代一般将来时.eg.

    I won't leave here until our teacher lets me leave.

    You will have to stay here unless your teacher lets you leave.

第2个回答  2013-08-26
表示时间的:when, untill, as soon as, before, after, by the time, next time;
表示条件的:if, unless, as/so long as; in case, only if, suppose/supposing that...; providing/provided that...;
表示让步的:even if/though; whatever(however, wherever...); no matter what (how, where...)
whether...or
全啦!追问

时间状语从句,条件状语从句,让步状语从句,这三种,都是主将从现?

追答

是的。

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