I wish there was something I could do帮忙分析下这个句子,我知道用was是因为要用虚拟,但为什么要用could呢,因can不行吗?

Wish That I Was There 歌词 wish there was something How i wish there was a temple中文什么意思? just wish that I didn't feel like there was something I missed I wish I was there to dry you off.怎么翻 I wish that was me., Wish I Was Dead 歌词 I wish was a rockerpurk 英语翻译I just wish there was another wayDon't we always!这样一句 when i was gonging up the stairs i met a man who wasn't therehe wasn't there again todayi wish i wish he'd go away. i wish i was the president 歌词 I wish i was remember什么意思 i wish i was a frog, There [is和was】som water in the bottle just now选哪个 有首歌叫There's som什么的 求Wish I Was Her链接 wish i was dreaming but is I wish I was that age again.was or were