Unit 1 Science and Scientists Discover Useful Structures 表语从句导学案-2023-2024学年高中英语人教版（2019）选择性必修第二册

Unit 1 Discover useful structures The Predicative Clauses 导学案 Teaching objectives: 1. Enable the students to master the usage of predicative in this unit. 2. Enable the students to use the predicative patterns flexibly. 3. Train the students to apply some skills by doing the relevant exercises. 一、表语从句定义 画出下列句子中的表语从句 1. One theory was that bad air caused the disease. 2. Another theory was that cholera was caused by an infection from germs in food or water. 3. The truth was that the water from the Broad Street had been infected by waste. 总结：在复合句中作____________的从句，叫作表语从句。表语从句接在__________________之后，对主语进行解释、说明，使主语的内容具体化。 2、 表语从句引导词 表语从句引导词（Leading words of Predicative clauses） Subordinating conjunctions 从 属 连 词 （不作成分） that whether because as if，as though （无意义） 是否 因为 似乎，好像 Conjunctional Pronouns连 接 代 词 （作主、宾、表、定语）（均有各自意义） what, who, whom, whose, which， whoever, whatever, whichever（强调无论是……） Conjunctional Adverbs连 接 副 词 （作状语，均有各自意义） when, where, how, why 1.that、whether (不能用if) 1. My belief is ______________I will succeed by working hard.我的信念是通过努力我会成功。 2. The most pleasant thing of the rainy season is ________one can be entirely free from dust. 雨季最令人愉快的事情是完全没有灰尘。 3. The problem is ______________we can find them there. 问题是我们能否在那里找到他们。 总结：that在从句中不充当成分，也没有实际意义，且不可省略；whether也不能省略，意思为：是否。 2. because 1. He has heart disease. That is ___________he has been smoking too much. 他有心脏病。那是因为他抽烟太多。 2. I didn't phone her, and that was _________________________________. 我没有给她打电话。那是因为我生她的气了。 总结：说明主语所表示的事件发生的原因，意为___________。 3. as if, as though 1. It sounds as if he could solve the problem. 听上去他能解决问题。 2. It looks as if it is going to rain. 看上去天要下雨了。 3. The young man with long hair looks as if he were a girl.那个留着长发的年轻人像一个女孩。 总结：由as if , as though引导表语从句，意为_______________.常接在look, appear, seem等系动词后面。 注意：as if/as though引导的表语从句如果是事实，就用陈述语气；如果与事实不符，就用虚拟语气。 1. It sounds as if someone is knocking at the door. (与事实相符) 2. Tom likes to talk big as if he were an impor