the bird wishes it were a cloud 请问这句话中的were为什么不是was?

the bird wishes it were a cloud 请问这句话中的were为什么不是was? The bird wishes it were a cloud.The cloud wishes it were a b the cloud wishes it were a bird 是什么意思? There were times when it was totally changed.这句话中的there were If I were a bird的英语语法问题?为什么用were 不用was? 为什么是I wish I were a bird 而不是I wish I was a bird 为什么 if i were a boy 中的were 不用was? 为什么是If I "were" a bird? The bird were ① enough .They really knew ② the cat was .⑴A . I WISH I WERE A BIRD.怎么这句子里面用WERE,不用WAS啊?是不是书上写错了 In the room was/were found hat ,a few suits.应该用was还是were,为什么 英语翻译这里为什么是were不是was