知识点-虚拟语气(一)

日期：2025-12-05

只要你想改变现在的状态，动词就退回过去式（be 动词变 were）。

主句用 would + 原形。

场景	现实情况 (Real)	虚拟语气 (Unreal)
变身	I am not you, so I can't decide. (我不是你，所以我不能决定。)	If I were you, I would accept the offer. (如果我是你，我就接受这个提议了。)
能力	I don't know his number, so I can't call him. (我不知道号码，所以没法打。)	If I knew his number, I would call him right now. (我要是知道他的号，我现在就打了。)
状态	I have no money, so I can't buy it. (我没钱，所以买不了。)	If I had a million dollars, I would buy an island. (我要是有两百万，我就买个岛。)
处境	It is raining now, so we can't go out. (现在下雨呢，出不去。)	If it were not raining, we would go for a picnic. (如果现在没下雨，我们就去野餐了。)

注意点： 哪怕主句里有 "right now"（现在），只要是假的，从句依然要用过去式（knew/were）！

想改变已经发生的历史，动词退到过去完成时（had done）。

主句用 would + have done。

场景	现实情况 (Real)	虚拟语气 (Unreal)
考试	I didn't work hard, so I failed. (过去没努力，所以挂了。)	If I had worked harder, I would have passed the exam. (当时我要是再努力点，我就过了。)
赶车	You were late, so you missed the bus. (你迟到了，所以没赶上车。)	If you had not been late, you would not have missed the bus. (你当时要是没迟到，就不会错过那班车了。)
受伤	He drove too fast, so he got injured. (他开太快，所以受伤了。)	If he had driven more slowly, he would not have got injured. (他当时要是开慢点，就不会受伤了。)
看病	I didn't know you were sick, so I didn't visit you. (我不知道你病了，所以没去看你。)	If I had known you were sick, I would have visited you. (我要是早知道你病了，我就去看你了。)

注意点： 看到主句里有 "have" (would have passed)，通常就是在聊过去的后悔事。

聊将来可能性极小的事，用 should 或 were to。主句用 would + 原形。

场景	语境含义	虚拟语气 (Unreal)
天气	明天应该不会下雪（现在是夏天），但万一呢？	If it should snow tomorrow, I would build a snowman. (万一明天下雪了，我就堆个雪人。)
中奖	我根本不买彩票，中奖概率几乎为0。	If I were to win the lottery, I would travel around the world. (万一我中了彩票，我就去环游世界。)
离职	他工作很稳定，不太可能辞职。	If he were to resign, who could take his place? (万一他辞职了，谁能顶他的位子？)
故障	机器刚修好，应该不会坏。	If the machine should break down again, call me immediately. (万一机器又坏了，马上叫我。)

知识点-虚拟语气(一) ​