过去式I wish I could fly.这里为什么要用could?不用can?

I wish I could. wish I could wish I could wish i could 歌词 过去式I wish I could fly.这里为什么要用could?不用can? I wish I could fly in the sky,could 和can,为什么不用can,could 是can的过去式吗? Wish That I Could Tell “I wish that I could show you” i wish i could break your I wish i could your one I wish I could give up______(喝酒). I wish i could happy every I wish I could give you some i wish i could help you How I wish I could 造句 I Wish I Could Say 歌词 “I wish I could visit him again. i wish i could 这个句式中wish的用法