必修3英语第四单元第三课时导学案.doc

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1、必修3英语第四单元第三课时导学案第三课时 grammerlearning aims:to learn the noun clauses as the subject.to master the grammer.课前预习look at the following sentences, paying attention to the underlined part.1.after that, what happened to the amber room remains a mystery. 2. it was obvious that the manager of the coffee shop

2、 was waiting for li fang to leave 课堂学习task 1:discussionsentences from this unit1. it was not clear whether the shape would last or not.2. what is even more important is that as the earth cooled down, water began to appear on its surface.3. it was not immediately obvious that water was to be fundamen

3、tal to the development of life.4.so whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. 5. how life began on earth is one of the biggest puzzles that scientists found hard to solvediscuss the use of whether , what, that, howtask 2语

4、法解读主语从句在复合句中充当主语的句子叫主语从句。主语从句主要由that,和wh-词引导。1.that引导的主语从句要点提示:（1）that引导的主语从句既可以放在句首，也可以放在句后。但为了保持句子的平衡，常用it作形式主语，把真正的主语放在句子的后面。（2）用it作形式主语的that从句有的已形成固定用法和译法。常见的如下句型:it +be+形容词（过去分词、名词、不及物动词等）+that从句。典型例句:that he survived the accident is a miracle.=it is a miracle that he survived the accident.他在这场

5、事故中幸免于难，真是奇迹。it is natural that she should cry.她大哭是人之常情。it is a great pity that you cant help us.你不能帮助我们真是非常的遗憾。2.wh-引导的主语从句要点提示:(1)wh-引导的主语从句既可以直接放在主语的位置，也可以用it作形式主语。(2)在wh-引导的主语从句中不能用it作形式主语。这里指的是what，whatever，whoever等引导的主语从句通常不能用it作形式主语（3）在wh-引导的主语从句只能用it作形式主语的情况:如果主语从句是一个疑问句，要用it作形式主语。在“it doesn

6、t matter +how/whether +if.”结构中要用it作形式主语。典型例句:what is most important in life isnt money.人生最重要的并不是金钱。（作主语）how he escaped still puzzles us.他究竟是如何逃脱的至今仍然令我们百思不得其解。（how引导主语从句，并在句中作方式状语）who was responsible for the accident is not yet clear.还不清楚谁对此事负责任。（作主语）when he will come has not been clear.他何时来还不清楚。（when引导主语从句，并在句中作时间状语）whether she comes or not doesnt concern me.她来不来不关我的事。（这里whether不能if用替换）whoever wants to see the film may get a ticket free.推荐阅读：2022高考英语必考词汇归纳22022届高考英语重点石成词汇及语法解析32022届高考英语必考词汇90天复习案：第68天2022届高考英语必修5 Unit 4复习教案2022高考英语短文改错练习集锦2022高考英语备考 it的用法小学英语教案英语教案模板英语教案 第 3 页 /总页数3 页