be supposed to 作为半助动词和被动语态用法的差别

be supposed to 作为半助动词和被动语态用法的差别
be supposed to 作为半助动词和被动语态用法的差别

be supposed to 作为半助动词和被动语态用法的差别
be supposed to=should的意思,用法也一样.should是没有被动的吧,所以它也没有.

be supposed to 是可能的意思，没有被动含义了