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高中英语语法与词汇《Structures in Use、Grammar in Use》精品PPT课件优质课下载
e.g. Flowers blossom in the spring.
He played the piano well.
2、祈使语气: 表示号召、命令、请求、劝告等。
e.g. Let us help you.
Keep off the grass.
3、虚拟语气:…
虚拟语气
在英语中,表示说话人所说的话不是事实,而是一种假设、愿望、怀疑或推测,要用虚拟语气。虚拟语气可以用于条件状语从句、主语从句、表语从句、宾语从句等。
if引导的虚拟条件句
If it were fine now, I would go shopping.
主句的谓语形式
从句的谓语形式
表示与现在 事实相反的情况
If条件从句
过去式(were)
should/would/
could/might
+动词原形
1. If the world war _____ (burst) out again, what _____________ (happen) to our people on earth?
burst
would happen
PRACTICE 1: Fill in the blanks.
2. If the policeman ________ (be not) in that room now, it ________ (be) very dangerous.
were not
could be