regret的词组是doing 还是to to 还是to have done.
regret的词组是doing 还是to to 还是to have done.
regret doing ,regret having done 和 regret to have done三者是否一样
regret 后加to do 还是 to bedoing 还是have done
regret to have done 与regret doing 有什么区别.肯定有区别
regret的用法有regret to have done吗,有的话,和regret having done有什么区别
regret to do sth ,regret doing sth ,regret having done sth有什
regret to do/doing
pretend have done还是pretend to have done?
having done和to have done区别?我们老师说regret to have done,forget h
to be done to have been done to have been doing 形式的造句,
see后面是加什么[doing还是to do还是did,done]
fail to do 还是fail to have done?