Grammar:虚拟语气

概述

作用:区分主观与客观
动词变化:虚拟原型/虚拟过去式

虚拟原型式 = 命令、要求、建议 = should+动词原形 = (should省略)+ 动词变形
虚拟过去式 = 现在-》过去,过去-》过去完成,将来-》过去将来,过去将来-》过去将来完成。
把虚拟原型式排除之后,可以简单地认为虚拟语气只包含虚拟过去式这一种形式。

常用虚拟原型式的词

1.动词ask,advice,command,demand,insist,order,require,recommend,suggest,urge等相关的宾语从句。
His father urged that he study medicine.

2.形容词advisable,appropriate,crucial,nature,desirable,essential,important,imperative,necessary,urgent,unusual,vital,requested,decided等相关的主语从句。

It is important that the hotel receptionist make sure that guests are registered correctly.
It is quite natural that the customs of all national minorities be respected.
It’s requested that all members be present at the meeting.