1、状语从句的省略观察思考1.Unless_ to speak, you should remain silent at the conference.A. invited B. inviting C. being invited D. having invited2. While _ alone in the street, I heard my name called.A. walked B. walking C.walk D.being walked 3 Tom raised his hand as if_something.A. said B. say C. saying D. to sa
2、y.分析： Unless_ to speak，是条件状语从句的省略，其之间省略了you are, 原句可变为：Unless you are invited to speak, you should remain silent at the conference分析 : While _ alone in the street,是时间状语从句的省略，原句可变为：While I was walking in the street, I heard my name called. .分析 ： as if_something.方式状语从句的省略，原句可变为：Tom raised his hand as
3、if he was to say something归纳总结1.（ You) dont speak until you are spoken to.2. She stood at the gate as if she was waiting for someone. 3. While I was walking alone in the street, my name was called.4. While I was walking alone in the street, I heard my name was called.5. He was a swimmer when he was
4、a child.6. Ill buy a TV set if it is necessary. 省略规则当从句的主语和主句的主语一致(或者从句的主语为 it)从句谓语中包含 be动词重难点解析 哪些 谓语 结构中包含 be 动词？被保留的部分是什么？.1.Dont speak until you are spoken to .2.She stood at the gate as if she was waiting for someone.be done spoken tobe doingwaiting for someone3.Tom raised his hand as if he was
5、 to say something.4.Ill buy a TV set if it is necessary.5.He was a swimmer when he was a childbe to doto say something主系表 necessary主系表a child进行时结构： be doing,被动语态： be done, 将来时 : be to do, 主系表结构： be +名词 /形容词（短语） / 介词短语因此在省去从句的主语和 be动词保留 be之后的部分，被保留部分常为现在分词、过去分词、不定式、形容词等。通过以上例句我们可以总结出含有 be 动词的结构 :特别关注
6、若从句的主句是 it或与主句的主语相同，且在谓语中含有 be时，常省略从句的主语和be。 被保留部分常为现在分词、过去分词、不定式、形容词等。1._ (在北京的时候 ), I paid a visit to the Summer Palace. 2. _(当是个年轻人的时候 ), Abraham Lincoln was a storekeeper and a postmaster. 3. He has no money. _ (要是有的话 ), he will give us. 4._(除非修理 ), the machine is of no use. 5. _(要是给更多的关注 ), The boy could have turned out better. 6. A girl stood at the gate of the school as if _ _(跟老师讲话 ).When/While in BeijingWhen/As a young manIf anyUnless repairedIf given more attention totalking with a teacher课 后 检测
