英语虚拟语气问题：wish ,would rather.sooner 后的宾语从句有什么要求?用一般过去时、?

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• wish could 的一个问题...虚拟语气好的.朋友来看看.I wish I could fly like a bird.我希望能像鸟一样飞.wish后跟从句是要用,虚拟语气,知道的.就是不太清楚,在什么时候,从句中 用 could 或是 would 谁能写下.也就是,wish后 怎么变,I wish there was something I could do这个句子,there后,是不是应该跟were
• 英语虚拟语气问题：wish ,would rather.sooner 后的宾语从句有什么要求?用一般过去时、?
• 虚拟语气as if 引导的从句问题首先问一下as if可以引导表语从句么?请给以个举例,as if 引导的从句,从句谓语动词应该使用什么?是did 还是 had done?既然跟wish后接宾语从句的谓语动词一样,为什么没有would do?原句When a pencil is partly in a glass of water,it looks as if it were broken.请问为什么用were broken?跟时态有关么?原句The two strangers talked as if they had been friends for years.为什么谓语动词是had been?而不是were或者其他的
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