environment. If we fail to do so, we'll live to regret it.found→find
2.(2017·全国卷Ⅱ短文改错)We can lie on the grass for a rest, or sat by the lake listening
to
music. sat→sit
虚拟语气
[深化认知]
一、if条件句中的虚拟语气
if条件
从句 从句的谓语形式 主句的谓语形式
表示与
现在事
实相反 动词过去式(be的过去式用were) should/would/could/might+动词原形
表示与
过去事
实相反 had+过去分词 should/would/could/might+have+过去分词
表示与
将来事
实相反 should+动词原形 should/would/could/
might+动词原形
动词过去式
(be的过去式用were)
were to+动词原形
If you didn't smoke so much, you might get rid of cough sooner.
如果你不抽那么多烟,你可能很快就不咳嗽了。
We would have called a taxi yesterday if Harold hadn't offered us a ride home.
如果昨天哈罗德没送我们回家,我们会打出租车回家的。
Grace doesn't want to move to New York because she thinks if she were to live there, she wouldn't be able to see her parents very often.
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