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虚拟语气 would 与 could 区别

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虚拟语气 would 与 could 区别
虚拟语气有种是IF ONLY开头的 比如这句:If only the rain would stop.(但愿与能停)
1.我想用I wish that the rain would stop.
2.还有就是would可不可以换成could?
3.要是能,那请问这两个词在虚拟语气中有多大差别?
虚拟语气 would 与 could 区别
1在请求时,没区别
如 Could you go with me?=Would you go with me?
2在表示习性时,不用could ,用 would
Ipushed the door,but it wouldn't open.
我用力推门却推不开.
3could用在wish的句型中:
I wish I could go to the Moon.
4 would ,could 都可以用在带if条件句的虚拟语气主句中,意思大致不变.
If I had a lot of money,I would/could buy a set of house in Beijing.
5 表示推测时,不用would
She could have gone to the cinema .(她可能看电影去了)