1. 这句话确实是对的。不好意思,我不知道怎么从语法的角度解释它,但是我们日常里经常这么说。也许你可以背一下这个句子。
2.“出问题”是verb+noun,“问题”就是a noun,当然有时候也可以做verb.
3.“出”在这个句子里是个动词,意思是something happen to his luggage.
4.sorry, I can't think of any synonym of 盛, could you give me a sentence, an example?
well, next question, which sentence you mean?