unit 3 grammar it用法导学案.doc

Unit 3 Grammer It 用法小结导学案 编写人：高二英语备课组 时间：12/1 教学目标：Students will master the usage of It 教学重难点：How to master the usage of It 知识链接：第二单元有关虚拟语气语法 教学步骤： Step1.Read and analyze the following sentences. S1. What is this? It is a cellphone. S2. What is that? It is his dictionary. S3. Whose book is this? It is Mr Cheng’s. S4. Where is your English book? It is here. S5. My cat is missing, I can’t find it anywhere. Question: What does “it” in these sentences refer to? 归纳总结: it 词性? ______ 可以用作人称代词，代指___________________ 还可以替代指示代词_____ 或______. Step2.Read and analyze the following sentences. It is Friday today. It was very cold last Monday. It is about 8:30 now. It is about 25km from Longxian to Bazi. It lies in the south of Shaoguan city. It is 40°C ! You got a high fever! Question: What does “it” in these sentences refer to? 归纳总结： :it 可以用作非人称代词，表示_____,_____,______,______,______,______等。 Step3.Read and analyze the following sentences. It is obvious that the water was to blame. It is true that he will treat me for breakfast tomorrow. It is certain that our class will do a good job in the final exam. Is it possible that he will become the chairman of our country? It is amazing that at my age I still look like a student! 分析：it是______ ,句子真正的主语是——____________ 牢记以下常用于该句型的形容词 It is clear /obvious /true /possible /certain /amazing/ridiculous等+ that从句. 思考：为什么要用it做形式主语而把真正主语放到后面去？ 跟踪训练1：It is+ adj. + that从句 很明显他已经知道了那个坏消息。 真的，我一点都不喜欢她的绵羊音。（sheep voice） 姚明篮球比易建联打得好是肯定的。 很有可能火箭队不能进入季后赛（playoffs） Step4.下面两道题有什么特别之处？ 1. It was urgent that he _________ her immediately. A. calls B. called C. call D. would call 2. It is strange that such a thing ___ in your school. A.? will happen? B.? happens? C.? should happen?? D.? happened Read and analyze the following sentences. It is strange thathe ( should ) say so 他居然会这样说，真是奇怪。 It is a great pity that he ( should ) think so 他居然会这样想，真是一件憾事。 It is natural that a bird ( should ) rest i