BE SUPPOSED TO DO SOMETHING是什么意思?

BE SUPPOSED TO DO SOMETHING是什么意思?
BE SUPPOSED TO DO SOMETHING是什么意思?

BE SUPPOSED TO DO SOMETHING是什么意思?
应该做某事（但没做）
I was supposed to warn her not to go there.
我应该警告她不要去那里.

“应该做点什么？"
不知道 我说的对不对```

似乎应该. 或者原本应该.
就是那种该做但是没做的情况.

be supposed to是应该，表示推测的意思，是一种口气.