是How to answer还是What to answer

问题描述:

是How to answer还是What to answer
He doesn't know () to answer

楼上的错了哦,应该用what
如果用how的话,从句 how to answer 缺宾语,
故,用how ,应表达为He doesn't know how to answer it
而what 本身是可以当宾语的,故可以直接用what to answer.