is not 可以缩略成 isn’t
are not 可以缩略成 aren’t
have not 可以缩略成 haven’t
do not 可以缩略成 don’t
can not 可以缩略成 can’t
need not 可以缩略成 needn’t
……
请问:在什么情况下,这样的否定式不能用缩略式,有这样的情况吗?谢谢!
在虚拟条件句中,如果条件从句为否定式,注意要将not置于主语之后,而不置于主语之前与 were, had, should 使用缩略式。如:
若非你的帮助,我仍会无家可归。
误:Weren’t it for your help, I would still be homeless.
正:Were it not for your help, I would still be homeless.
要不是我亲眼所见,我都不会相信了。
误:Hadn’t I seen it with my own eyes, I would not have believed it.
正:Had I not seen it with my own eyes, I would not have believed it.