（1）If什么时候意思表示“是否”?
问题描述：
（1）If什么时候意思表示“是否”?
（2）L didn’t know.Where will he go
= L didn’t know Where he would go .
为什么用would?
（3）Here is _____ order ,All of you must obey it.
(4) We watch the opening ceremong pf the World Expo on TV ______ last night.
(5)TOM would go to vist his grandparnts if he had free time on Sunday.
为什么用would?
(6) Have you ever been in a maglev tarin
为什么用in
3）Here is _____ order ,All of you must obey it.
A a B an C the D /
答
（1）I have to check if he has done that. if 在此表示是否.而在条件状语从句中表示如果.（2）I didn't know where he would go. 用would表示时态统一,因为I didn't know.(3) the(4) 无（5）虚拟语气,if he had fr...