be supposed to和be supposed to have done我都知道主语为物时表示“本应做而没做”还有时态和感情上区别，但是我看到好多例句就混不清了。
问 be supposed to have done是过去完成时吧？
be supposed to have done我知道＝should have done，
问be supposed to have done仅用于虚拟？？？
例如you were supposed to have finished the work,but i haven't seen it now.请问这是虚拟？？但是既然be supposed to主语是“物”时也表示本应做而没做，为什么这个没见过虚拟语气？晕了啊我！！！！！
3.问一个小题：
——I haven't heard from Tom for a long time.
——What do you suppose（）to hear
A.was happened B.to happen
C.has happened D.having happened
选哪个啊
采纳一一解答！
mrbig000 网友
该名网友总共回答了19个问题，此问答他的回答如下：采纳率：78.9%
1.be supposed to对现在或者将来的事推测 例如 He is supposed to be in the classroom now. You are supposed to finish to the work soon. 2.be supposed to have done 对过去发生的事推测或虚拟1年前他留下的回答
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