used to与be used to doing用法区别还有其他几个used to be used to doing sth be used to do 另外以上几个词各自用于什么时态中、表示什么具体含义呢?

be used to与have used to used to与be used to的用法区别? used to 与 used to be 的区别用法 used to 与 be used to 的区别,并造句 be used to doing与used to do的区别 used to与be used to的用法及区别 used to 与 be used to 的区别?如题 used to 与be used to的区别 be used for与be used to的区别 The room ____c__ as a meeting room.A.used to being used B.was used to being usedC.used to be used D.was used to be usedWhy? used to／be used to／be used for的区别 used to be used to be翻译 I used to be used to be to be used used to be to be used