虚拟语气（Subjunctive Mood）

【重点点拨】常考的虚拟语气用法

1. if型虚拟语气

If I had super power, I would turn time back.

If you had left your bicycle unlocked last night, someone might have stolen it.

2. should型虚拟语气

（1）表“命令”（order, command, instruct)、“建议、提议”（suggest, advise, propose, advocate, recommend)、“请求、要求”(request, require, urge, demand, insist)等词汇后跟从句时，从句须用虚拟语气。结构为：(should) + v.原形。如：

(should) be transferred into market economy. （动词+宾语从句）

His demand is that we (should) set off at once. （名词+表语从句）

（2）It be + 形容词 + that... (should)...。用于该句型的形容词有：vital, necessary, imperative, important, essential, better, natural, proper, surprising等。如：

It was imperative that he (should) act as naturally as possible.