the students would have done the exercisemuch better
显然是虚拟
因为主语是the students,前面一定要被动,
可以说:given
或者不用分词短语,改成复合句的分句.
if they had been given,
if had given这样不行.
the students would have done the exercisemuch better
显然是虚拟
因为主语是the students,前面一定要被动,
可以说:given
或者不用分词短语,改成复合句的分句.
if they had been given,
if had given这样不行.