Be allowed to do something是一个词组吗?

Be allowed to do something是一个词组吗? be allowed to do近义词 I think that you should be allowed to do something you want be allowed to do 还是be allowed doing be allowed to do sth等于allow doing sth吗? be up to do something 确定做某事的英语词组be sure to do等不等于be certain to do?又没有一个词组是be certa Students should be allowed to do homework with their friends 写成should be allowed to do句形 allow doing 与be allowed to do 区别 用sb should be allowed to do 各造10句 be allowed 后用doing还是to do