should be could be must be will be 的用法及区别

should be could be must be will be 的用法及区别
should be could be must be will be 的用法及区别

should be could be must be will be 的用法及区别
你可以通过直译来区别,
should be 是“应该…”；
could be 是“可以…”,不过could在此不是can的过去时,只是为了好记而翻译为“可以…”,比shoule be 委婉.
must be 比前两个语气都强硬,表示必须
will be,跟他们关系不大,表将来.
意思知道,用法应该不难吧.都做谓语.