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1、Unit 3Language in useTo learn to use Imperatives to express your attitude语法讲解建议采用归纳法，如语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，尽可能多的呈现一些相关例句，或可让学生从已学课文中找相或可让学生从已学课文中找相应例句，引导学生试着从所观应例句，引导学生试着从所观察到的语言现象中总结出语言察到的语言现象中总结出语言规则和语法规律。规则和语法规律。在本模块中我们接触到了这些句子：在本模块中我们接触到了这些句子：Dont stand too close to North Americans.Give th
2、em more personal space.Be careful!Wave to say goodbye.课文中的这些句子叫作课文中的这些句子叫作 。祈使句用来表达叮嘱、劝告、希望、祈使句用来表达叮嘱、劝告、希望、禁止、警告、请求或命令等。祈使句禁止、警告、请求或命令等。祈使句最常用来表达命令。最常用来表达命令。Go and wash your hands.快去洗手。快去洗手。 （命令）（命令）Be quiet, please.请安静。请安静。 （请求）（请求）Be kind to our sister.要对我们的妹妹友善。要对我们的妹妹友善。 （劝告）（劝告）Watch your step
3、s.走路小心。走路小心。 （警告）（警告）No littering.不要乱扔垃圾。不要乱扔垃圾。 （禁止）（禁止）Dont forget to take an umbrella.不要忘了带雨伞。不要忘了带雨伞。 （叮嘱）（叮嘱）请仔细观察以上祈使句，然后说出请仔细观察以上祈使句，然后说出祈使句的特点：祈使句的特点： 祈使句一般没有主语，说话的对象祈使句一般没有主语，说话的对象 都是第二人称都是第二人称“你你”或或“你们你们”，所以所以 也可以理解为省略了主语也可以理解为省略了主语you。 以动词原形开头，无时态和数的变以动词原形开头，无时态和数的变 化。化。 祈使句的否定形式是在动词原形前祈使
4、句的否定形式是在动词原形前 加加dont。 在表达请求时，可以加上在表达请求时，可以加上please； 表达比较强烈的语气时，可以用表达比较强烈的语气时，可以用 感叹号。感叹号。More examples:Please close the door.请把门关上。请把门关上。Sit down, please.请坐。请坐。Come to my office.到我办公室来。到我办公室来。Stop! 停！停！Hurry up! 快点！快点！Please dont do it.请不要这么做。请不要这么做。Dont be late again. 不要再迟到了。不要再迟到了。Dont worry. Be h
5、appy.不要担心，高兴点儿。不要担心，高兴点儿。Dont bring any food or drink into the lab next time.下次不要把任何食物或饮料带到实验下次不要把任何食物或饮料带到实验室来。室来。Dont forget to turn off the lights.不要忘记关灯。不要忘记关灯。课堂练习答案课堂练习答案1 Work in pairs. Talk about dos and donts in a foreign country.Britain Dos Stand in line. Shake hands. Say please and thank
6、you. Open doors for others. Look at people when you talk. Be on time.Britain Donts Touch people. Ask a womans age. Stand too close. Say anything too personal.2 Make a list of dos and donts to help visitors to Britain. Stand in line. Dont touch people when you talk to them. 3 Rewrite the sentences.Eg
7、. Its important to listen to the teacher. Listen to the teacher. You cannot shout in the classroom. Dont shout in the classroom.1. Its important to be careful. Be careful.2. Its important to clean and tidy the lab. Clean and tidy the lab.3. You cannot touch anything if the teacher doesnt ask you to.
8、 Dont touch anything if the teacher doesnt ask you to.4. You cannot bring food or drink into the lab. Dont bring food or drink into the lab.5. You cannot enter the lab alone. Dont enter the lab alone.4 Answer the questions. Use the words and expressions from the box to help you. all right, arm in ar
9、m, close different, hold on to, kiss three timespoint at, shake hands with, wave1. How do the British say hello to each other when they first meet? They shake hands.2. Does body language mean the same thing in different countries? No, it means different things in different countries.3. How do the Ru
10、ssians say hello to each other when they meet? They kiss three times.4. Is it polite to stand close to North Americans? No, it is not polite to stand close to North Americans.5. Is it all right to wave goodbye in Greece? No, it is not all right to wave goodbye in Greece.6. How do you usually say goo
11、dbye with body language? I usually wave.课堂小测验课堂小测验课堂小测验课堂小测验Individual activityI.用括号内所给动词的恰当形式填空。用括号内所给动词的恰当形式填空。1.Its an important meeting. _ (not, be) late.2._ (not, make) any noise! Your mother is sleeping.3._ (not, speak) with your mouth full of food.4._ (not, talk) and _ (read) aloud.Dont beDon
12、t makeDont speakDont talkread5. _ (not, leave) your homework for tomorrow, Larry.6. _ (look) out! A car is coming.7. _ (give) us ten years and just see what our country will be like.8. _ (not, let) the baby cry.Dont leaveLook Give Dont letII. 翻译下列各句。翻译下列各句。 1. 咱们一起玩吧！咱们一起玩吧！ 2. 请不要迟到。请不要迟到。 3. 回答这个问
13、题。回答这个问题。 4. 不要这么吵。不要这么吵。 Lets play together.Dont be late, please.Answer the question.Dont make such a noise.5. 上课安静。上课安静。 6. 不要随处乱扔垃圾。不要随处乱扔垃圾。 7. 不打架不骂人。不打架不骂人。 8. 有事请假。有事请假。 9. 友好待人。友好待人。 Be quiet on class.Dont throw rubbish everywhere.Dont fight or say rude words.Ask for leave.Be friendly to classmates. 1. To preview Unit 1, Module 122. To practise the vocabularyWrite ten short imperatives. You can use dos and donts.
