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1、 Unit 4 Global Warming Part III Grammar一、【学习目标】1.掌握强调句型的基本结构和几种基本句式。2.掌握判断强调句型的方法。3.能较为熟练的完成强调句型的相关练习。二、【基础知识】 I、强调句型的基本结构 【研读思考】(1) It was what he said that disappointed me. (2) It is I who am to blame.(3) It is Mary who is looking into this case.(4) It is him that Im looking forward to meeting.(5)
2、 It is from the sun that we get light and heat.(6) It was not until I had read your letter that I understood the true state of affairs.【结构归纳】(1)强调句型的基本结构是：_(2)强调人时也可用_。(3)强调结构中的be 动词只能是_或_。(4)如果强调的是主语，用_格，强调句中的谓语动词要根据_ 来确定单复数；如果强调的是宾语，用_格。【操练巩固】请把下面的句子按要求变成强调句型。I saw the man in the park yesterday af
3、ternoon.(1) It was _ saw the man in the park yesterday afternoon. (强调主语)(2) It was _ I saw in the park yesterday afternoon. (强调宾语)(3) It was _I saw the man yesterday afternoon. (强调地点状语)(4) It was _ I saw the man in the park. (强调时间状语)II、判断强调句型的方法【研读思考】(1) It was on February 12, 1809 that Lincoln was
4、born. (_句_)去掉it was 和that后变为:Lincoln was born on February 12, 1809, 是完整的句子。 (2) Its clear that the girl made such a stupid mistake. (_句_)去掉it was 和that后变为the girl made such a stupid mistake clear, 不是完整的句子。【结构归纳】去掉_和_后，剩下的部分能够构成_的句子且不缺少任何成分时，即是强调句型。这是区别强调句型和主语从句、定语从句等的重要依据。【操练巩固】(1) It is the girl wh
5、o made such a stupid mistake. (_句)(2) It is a good idea that we play basketball some time before going swimming. (_句)(3) It is a fact that the earth travels around the sun. (_句)III、强调句型的几种句式1. 一般疑问句 【研读思考】(1) Was it in the supermarket that you had your pocket picked?(2) Is it in the theater that you
6、r son is giving a performance?【结构归纳】强调句型的一般疑问句的基本结构是：_【操练巩固】(1) _who lost his schoolbag?丢书包的是那个男孩吗？(2) _ he recovered from his illness soon?是因为他对生活有激情使得他从疾病中很快恢复过来的吗？2. 特殊疑问句 【研读思考】Who was it that you talked with just now?When is it that we are going to spend our holiday?【结构归纳】强调句型的特殊疑问句的基本结构是：_【操练巩
7、固】(1) _you go to school every day? 你每天究竟是怎样上学的呢？(2) _ made him so angry? 到底是什么使他如此生气？(3) _ you sold your hair? 是在什么地方你把头发卖掉的？3. notuntil的强调句型【研读思考】(1) It was not until last week that he told me the news.(2) It was not until then that he realized he was cheated.【结构归纳】notuntil的强调句型的基本结构是：_【操练巩固】(1)_he
8、 went to bed. 直到妻子回来他才去睡觉。(2)_ that he was operated on.直到午夜才给他做手术。4. 强调 是而不是 It is / was, not / rather than, that It is / wasthat, not不是而是 It is / was notbutthat【研读思考】(1) It is not help but obstacles that make a man.(2) It is the mother rather than the grandparents that is to blame for the spoiled c
9、hild.【结构归纳】在强调“是而不是”和“不是而是”时，强调句型中谓语动词的单复数要根据_ 而定。【操练巩固】(1) It is the ability to do the job _, not where you come from or what you are. 重要的是你的工作能力而不是你来自哪里或者你是谁。(1) It is the prevention of disease rather than its successful treatment _ the rapid increase of the worlds population.是疾病的预防导致了世界人口的急剧增长，而不
10、是对它治疗的成功。IV、强调句型中的be动词和情态动词的结合。【研读思考】(1) It might have been John _bought a new book for Mary yesterday.(2) It may be next week that she leaves for Tokyo.(3) It must have been his brother that you saw. (4) It must be a wallet that the girl is looking for.(5) It cant be Mary that is presenting a speec
11、h.(6) It couldnt/cant have been an iPhone that he bought on the “Singles Day”.【结构归纳】强调句型中的be动词和情态动词结合的基本句式是：It +情态动词+ be/have been + 被强调部分+ that 1. 可能是_2. 肯定是/一定是_3. 不可能是/肯定不是_【操练巩固】(1) _ spoke to him just now.刚刚可能是经理和他谈话了。(2) _ that he is reading.他在看的不可能是一本小说。(3) _ his brother that you met in the e
12、xhibition hall yesterday. 昨天在展览大厅看到的一定是他的哥哥。V、注意强调句型用于复合句或其它复杂结构的情况(1) Where did you find the professor who made the speech yesterday?It was in the hall _.- 你在哪里找到昨天给我们演讲的那位教授？ - 是在学生经常开会的大厅。(2) It was the man _when he was a little boy _ the gold medal in the competition. 是那个在孩童时期就接受了良好的训练的男人在比赛中赢得了金牌。(3) It was in the small house _with
