The boys are talking about when_(have) the class party

问题描述:

The boys are talking about when_(have) the class party

应该填to have麻烦简单解释一下原因,谢谢!The boys are talking about when to have the class party
男孩们在谈论着什么时候举办班级聚会请问运用了哪一语法点???when to do sth. 不定式表示“要去做某事”to do 表示将来的动作 不确定的时间