be supposed to 请举例.

问题描述:

be supposed to 请举例.

be supposed to 的用法用法一:be supposed to...其中to是动词不定式符号,不是介词,其后要跟动词原形.当be supposed to...的主语是“人” 时,意为“应该…… ”;“被期望……”,它可以用来表示劝告、建议、义务、责...