1.if 条件从句的谓语动词用虚拟语气,主句也要用虚拟语气 1〉表示与现在事实相反 2〉表示与过去事实相反 3〉表示与将来事实相反
-- by 会员 christy42728 (2007/11/26 13:38:00)
从书上抄来的,希望能有助于大家的理解 1>与现在事实相反的假设 从句谓语动词were/V.+-ed(过去式),主句谓语动词 should (would,could,might)+ V. eg. If I were you, I would take an umbrella. If I knew his telephone number, I would tell you.
2>与过去事实相反的假设 从句谓语动词had+V.+-ed,主句谓语动词 should (would,could,might)+have+V.+-ed eg.If he had taken my advice, he would not have made such a mistake.
3>与将来的事实相反或完全不可能实现的事 从句谓语动词should+V./were to+V.,主句谓语动词should (would,could,might)+V. eg.If he should come here tomorrow, I would talk to him. If she were to be there next Monday, I would tell her about the matter. |