You must tell us exactly what you would like to do.
问题描述：
You must tell us exactly what you would like to do.
You must tell us to exact what you would like to do.为什么是错的
答
tell sb to do sth, tell sb sth
告诉某人做某事,告诉某人某事
这个句子的意思是：你必须明确地告诉我们你想要干什么.
exactly这里是副词 修饰tell
what you would like to do是tell的间接宾语,也就是tell sb sth中的sth