Question

----- John looks a bit upset. Did you tell him the bad news?
------Yes, but I _____him after his birthday party.

A．should have told	B．must have told
C．shouldn’t have told	D．needn’t have told

Answer 1

A

考查虛擬語氣。Should have done sth本應(yīng)該做某事實際上卻未坐；must have done一定做了某事；shouldn’t have done本不應(yīng)該做某事，實際上卻做了。Needn’t have done本不需要做某事，實際上卻做了。句意—John看上去有點難過。你把那個壞消息告訴他了？—是的�？晌冶緫�(yīng)該是在生日聚會以后在告訴他的。根據(jù)句意說明A正確。
點評：虛擬語氣的考查重點要關(guān)注if條件句的虛擬語氣，不同的時態(tài)使用不同的形式。