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《Structures in Use、Grammar in Use》公开课PPT课件优质课下载
1）概念 虚拟语气用来表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。
TONGLIAO NO.1 SENIOR HIGH SCHOOL
2）在条件句中的应用 条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设的或实际可能性不大的情况，故采用虚拟语气。
TONGLIAO NO.1 SENIOR HIGH SCHOOL
1 表示与现在事实相反的假设
条件状语从句用“一般过去式(be一般用were)”，而主句谓语动词由
“would/should/could/might + 动词原
形”构成。
虚拟语气用于条件状语从句
If I were a boy, I would join the army.
If I won the lottery （彩票）,
I would buy an expensive car.
TONGLIAO NO.1 SENIOR HIGH SCHOOL
If I had a lot of money now,
I would travel around the world.
TONGLIAO NO.1 SENIOR HIGH SCHOOL
a. If they _____ (be) here, they __________ (take) your advice.
b. If the world war _____ (burst) out again, what _____________ (happen) to our people on earth?
were
would take
burst
would happen
I: Fill in the blanks.
TONGLIAO NO.1 SENIOR HIGH SCHOOL
c. If the policeman ________ (be not) in that room, it ________ (be) very dangerous.