精选优质文档-倾情为你奉上常见的有以下六种情况:一、如果主句是将来时或表示将来含义时,那么条件和时间状语从句多用一般现在时如: When I grow up, I will be a nurse and look after patients/ I want to 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:Dont 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notto.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,wh