Mr.Brown is supposed to have left for Ltaly last month这里为什么用 have 不用has?
问题描述:
Mr.Brown is supposed to have left for Ltaly last month
这里为什么用 have 不用has?
答
to后面得接动词的原型,to do,所以得接has
答
be supposed to do sth
而且to要么就是做介词 要么就是成立一个动词不定式
我没见过to后面还有用第三人称单数的
答
be supposed to do 用动词原形,所以是have
答
To 不定式,后加动词的原型
是语法知识