Have后接名词再接动词,动词前什么情况下要加To
问题描述：
Have后接名词再接动词,动词前什么情况下要加To
Have n v和 have n to v
答
have+名词＋doing 这个结构只要是have加上名词后面就要接动名词.例如have difficulty doing sth,have problem doing sth等～
have to do sth 不得不作某事
have sb done sth 让某人作某事