问题描述：
虚拟语气中当表示与将来相反时,if条件句可以用三种情况,这三种有什么区别吗?
虚拟语气中当表示与将来相反时,if条件句可以用三种情况.
1.过去时
2.should+do
3.were to do
1.这三种使用时有什么区别吗?
2.在should+do 中 should可以用would,could等替换吗?
如：
If you succeeded,everything would be all right.
If you should succeed,everything would be all right.
If you were to succeed,everything would be all right.
虚拟语气中当表示与将来相反时,if条件句可以用三种情况.
1.过去时
2.should+do
3.were to do
1.这三种使用时有什么区别吗?
2.在should+do 中 should可以用would,could等替换吗?
如：
If you succeeded,everything would be all right.
If you should succeed,everything would be all right.
If you were to succeed,everything would be all right.
问题解答：
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