新人教版高中英语必修3Unit 3 Diverse Cultures-Discovering Useful Structure教学设计（比赛版）

3. 状语从句中的省略：当状语从句中的主语和主句的主语一致或从句主语是it, 并且从句谓语中有be动词时, 常可以省略从句中的主语和be动词。此类状语从句中的省略有如下情况: （1）在as, before, till, until, when, while等引导的时间状语从句中。While(I was)walking along the street, I heard my name called.（2）在though, although等引导的让步状语从句中。Though(they were)tired, they went on working. （3）在if, unless等引导的条件状语从句中。You shouldn’t come to his party unless(you are)invited. （4）在as, as if, as though等引导的方式状语从句中。He did as(he was)told. （5）在虚拟语气中, 常省掉if, 从句使用倒装句式。Were I you(=If I were you), I should give that guy a good lesson. 4. 定语从句中的省略（1） 一般说来, 在限制性定语从句中, 作宾语的关系代词that, which, who, whom可以省略; 而在非限制性定语从句中作宾语的关系代词不可以省略。 The man (whom)you saw yesterday fell ill.The man, whom you saw yesterday, fell ill. （2） 当先行词是way, 且引导词在定语从句中作方式状语时, 引导词可用in which或that, 也可以省略。 The way( in which/that )these comrades treat problems is wrong.固定短语中的省略：not at all, what about, why not, if only, what if...