他们是否去参加那个讲座没关系（It doesn't matter）
问题描述：
他们是否去参加那个讲座没关系（It doesn't matter）
答
it doesn't matter whether they will attend the lecture or not
答
It doesn't matter whether they takes a course of lectures？
答
It doesn't matter if he attends the lecture.
答
I t dosen't matter if they go to the lecture