高中英语人教版选修6Unit5thepowerofnaturegrammar教案（系列二）.docVIP

Unit 5 The power of nature Grammar—the －ing Form 教案 Review the usage of v–ing form: 1. Write the following pairs of sentences(or other similar ones)on the board. I was feeling tired. I went to bed early→ Feeling tired I went to bed early I worked hard all day. I went to bed early→ Having worked hard all day, I went to bed early. Ask student to consider when the action in each pair of sentences happened and Lead them to understand that in the first pair of sentences, the feeling and the action are happening at the same time; whereas in the second pair, the working all day happened before he/she was tired. 3. Examine the sentences below and discuss in what way the structures similar to each other and in what way they are different Looking carefully at the ground, I made my way to the edge of the crater. Having experienced quite a few earthquakes in Hawaii already, I didn’t take much notice. Having + past participle (the perfect v–ing form) to refer to an action that took place before the time expressed by main verb. 4. Read and discuss Exercise 1 in the SB 5. Set Exercise 2. check answers and discuss structures. 6. Set Exercise 3, 4 and 5. check answers after each exercise and discuss reasons for the structures used. 7. 小结v-ing 形式的用法 v–ing 形式作状语 用法 例句 时间 Walking along the street, I met Mary. (= While I was walking along the street….)在街上走的时候，我遇到了玛丽。 条件 Turning to the left, you will find the school. (= If you turn to the left, ….)向左走，你就会找到那个学校 让步 Knowing where I live, he never come to see me .(= Though he knows where I live, ….)尽管他知道我的住处，但从不来看我。 伴随 I stood there, waiting for her. (= …, and waited for her.)我站在那儿等她 原因 Being tired , I stopped to take a rest. (= Because I was tired, ….)因为疲倦，我停下来休息。 结果 It rained heavily, causing severe flooding in the area.(= It rained heavily so that it caused severe flooding in the area.)在这个地方雨下的如此大，以至引发了洪灾。 ( (Having been)+p.p. …, 主语+谓语 被动 主动 Having finished my work, I went home. (= After I had finished my work, ….)工作做完只后，我就回家了。 例句