Question

请教情态动词的推测用法

1我的语法书上阐述的不是很详细，我现在比较混淆不清，所以麻烦帮我分别归类下一情态动词表推测时，哪些可以表示对现在推测，将来推测，过去推测？

2情态动词could/might/would/should+have done，在没有具体语境时会产生歧义，也就是有可能是表推测，也有可能表虚拟。请问同样在没有具体语境的情况下，这四个情态动词对现在和将来的推测会不会也出现与虚拟的歧义呢？

先谢了

Answer 1

肯定句 疑问句 否定句
猜测可能 事实100%do,be Do,Be do,be+not
主观预料 will do Will…? won't
迹象推测 be going to do Be…? be+not
一定90% must do Can can't不可能
可能50% may,could do Could couldn't可能不
也许30% might do Might mightn't也许不
必须应该 符合主观 must do Need needn't没必要
违背主观被迫无奈 have to do =gotta Do…? don't…
有人逼你 没人逼迫你
建议应该 should do should shouldn't不应该
责任应该 shall do Shall…? shan't
按理应该 ought to do Should…? oughtn't
威胁应该 had better do Hadn't…? had better not do
希望对楼主有所帮助

Answer 2

事实100%do,be Do,Be do,be+no 主观预料 will+5 Will…? won't
迹象推测 be going +4 Be…? be+not 一定90% must+5 Can can't不可能
可能50% may,could+5 Could couldn't可能不 也许30% might+5 Might mightn't也许不