why does he must leave early? 是对的还是错的 . 为什么

why does he must leave early? 是对的还是错的 . 为什么 Must he leave early? He must leave early 英语翻译 Why must he leave early to breakfast 语法对么 He must leave early.的否定形式是什么? 为什么He said he must leave early等效转换是He said he would have to why he must leave now还是why must he leave now he said he must leave early 的同义句he said he would have to lea he said he must leave early 此句的同义句可为He said he had got to le He must leave early否定句 he must leave early变否定句怎么变? 他为什么看不见的英语翻译是why can't he see?还是why can he not see?请说明为什么!