視頻標簽：Sandstorms,in Asia

所屬欄目：高中英語優質課視頻

視頻課題：高中英語外研版必修3Module 4 Sandstorms in Asia Grammar廣東省 - 深圳

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教學目標
1. To understand the form and meaning of the infinitive--to do.
2. To master the usage of the infinitive--to do.
3. Guide Ss to cooperate with others by working in groups of four.
2學情分析
學生為高二文科生。大部分學生基礎較好,個別學生基礎較薄弱。由于文理分科不久,師生處于一個適應階段。
3重點難點
1. To understand the form and meaning of the infinitive--to do.
2. To master the usage of the infinitive--to do.
4教學過程
4.1第一學時
4.1.1教學活動
活動1【導入】Approaching　the　grammar
Have a free talk about what future work the students would like to do.
T: What do you want to be in the future?
S: I want to be...
活動2【導入】Discovering　the　grammar
Ask the students to read and observe the sentences in the previous picture and find out the similar structure.
活動3【講授】Defining　the　grammar　(form　＆　meaning)　
1. Underline the infinitive in the text (P32).
1). Scientists have tried many ways to solve this problem in China, a mass campaign has been started to help solve it.
2). The wind is sometimes strong enough to move sand dunes.
3). To have been caught in a sandstorm was a terrible experience.
4). There was nothing to be done.
5). I thought I was going to disappear under the sand.
6). Sandstorms in China appear to have increased in recent years as a result of desertification.
7). The thick dust makes it difficult to see.
8). Weather experts advise people not to go out.
9). To be cycling in a sandstorm is frightening.
10). It’s difficult to breathe.
11). If you want to go out, you’d better wear a mask.
12). To prevent it coming nearer, the government is planting trees.
13). The government plans to continue planting for the next five years.
2. Fill in the following chart about the infinitive.

時態	主動式	被動式
一般式	(not ) to do	________________
進行式	to be doing	/
完成式	________________	________________

 
3. Usage (用法)
Read the sentences and analyze the constituents (成分) of the infinitive in each sentence.
1) My dream is to be admitted to Shenzhen University.
2) To make my dream come true is not easy.
3) In order to make my dream come true, I should study very hard.
4) I have two years to make my dream come true.
5) I want to be an English teacher.
6) My English teacher always encourages me to face challenges bravely.
活動4【練習】Understanding　the　grammar
1. Fill in the blanks with the correct forms of the verbs given.
1) He agreed                (help) me with my study.
2) My mother doesn’t allow me                (go) out at night.
3) Sarah invited me                (attend) her birthday party.
4) The doctor warned him               (not, smoke) anymore.
5) When I came in, he happened               (go) over his lesson.
6) I would like               (have) a cup of tea.
7) I remembered _________ (lock) the door before leaving the office, but forgot to turn off the lights.
8) To catch the first train means _________  (get) up at 6:00.
9) Stop_________ (do) your homework and have a cup of coffee.
10) The ability____________ (express) an idea is as important as the idea itself.
11) ____________(master) English, we must work hard at it.
 
2. Translate the following sentences into English using the infinitive.
1) 對我們而言,學好英語很重要。
                                                                      
2)我每天要花30分鐘完成英語作業。
                                                                      
3)我發現用這種方式學英語很有趣。
                                                                      
4)練習使得學習英語更容易。
                                                                      
5) 父母沒有必要為孩子做一切事情。
                                                                      
6)是時候要保護環境了。
                                                                      
7) 她太小還分不清是非。
                                                                      
8) 文森特(Vincent)夠大方(generous),給大家都買了禮物。(enough to...)
                                                                      
9) 我趕到餐館,卻發現沒帶錢。(only to...)
                                                                      
活動5【活動】Applying　the　grammar　　　　(Speaking)
    Our school is holding an activity called “Green school”. “Green school” does not only mean green environment, but also mean positive study atmosphere. Discuss in groups about the purpose and importance of the activity and think of at least three things we need to do to improve our environment.
In order to/To...
...so as to...
We need to...
We ought to...
We are supposed to...
It is important/necessary for us to...
活動6【作業】Homework
    Suppose you are the chairman of the Students’ Union in our school, please write a report about “Green School” to call on students to protect the environment.

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