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1、英语教学课件,外研 八年级 上册,Module 12 Help,Language in use,Unit 3,Dos Stay in a small room, such as kitchen or bathroom. 2. Hide under the table or bed. If you havent time to escape, you may stand close to the inside wall with some things covering on the head. 3. Stay in the open air, keep off the tall buildin
2、g and go to the fields without trees.,What shall we do or not do if an earthquake happens?,Revision,学科网,Donts 1. Be close to the outside wall. 2. Stay on the balcony. 3. Jump out of the tall buildings. 4. Use the lift.,zxxk,Objectives,1. To summarise and consolidate the use of modal verbs must, can,
3、 could (for prediction) 2. To write instructions on self -protection in disasters or accidents,1. That could be harmful! 2. Betty, you must know! 3. Stay away from windows and heavy furniture. 4. Do not stand near street lights or under power lines.,Observe,Observe the following sentences carefully
4、and pay attention to the words in red.,学科网,5. But he could have trouble hearing you or speaking to you. 6. Make sure hes warm. Cover him with a coat. 7. You could drop him and hurt him even more. 8. Find out whats wrong with him. 9. Do not jump out of high buildings. 10.On a beach, run away from the
5、 sea and move quickly to higher ground.,1. That _ be harmful! 2. Betty, you _ know! 3. _ _ _ (stay away from) windows and heavy furniture. 4. _ _ (not stand) near street lights or under power lines. 5. But he _ have trouble hearing you or speaking to you.,could,must,Stay away from,Dont stand,could,g
6、o,Ready?,6. _ _ (make sure) hes warm. _ (cover) him with a coat. 7. You _ drop him and hurt him even more. 8. _ _ (find out) whats wrong with him. 9. _ _ _ _ _ (not jump out of) high buildings. 10.On a beach, _ _ _ (run away from) the sea and _ (move) quickly to higher ground.,Make sure,could,Find o
7、ut,Do not jump out of,run away from,move,Cover,祈使句 情态动词must,can, could表推测,一、祈使句,祈使句表达说话人对对方的叮嘱、劝告、希望、禁止、建议、请求或命令等。祈使句一般以动词原形开头，无时态和数的变化。常见的句型如下： 1.动词原形构成的祈使句 2.lets构成的祈使句 3.无动词祈使句,1. 动词原形构成的祈使句 此类祈使句暗含的主语是you，但通常省略。否定句往往由 do not（dont）或 never 开头。例如：,Have a nice day! 祝你度过美好的一天！ Dont waste your time! 别
8、浪费时间了！ Never be late again! 再也不要迟到了！,Come this way, please. 请走这边。 Please be quiet, boys! 男孩们，请安静！,祈使句的句首或句末有时加 please。,还可以加上称呼语，用逗号与句子主体隔开。,Betty，you must know! 贝蒂，你肯定知道！,2. lets 构成的祈使句 这类祈使句往往用于提出建议。例如： Lets spend this weekend in the countryside. 这周咱们到乡下度周末吧。 Lets take a taxi, shall we? 我们坐出租车好吗？,3
9、. 无动词祈使句 在请求、命令和口号中，常用无动词祈使句，它实际上是省略了动词，从而使语句更简洁有力。例如： Just a minute, please! 请稍等！ This way, please! 请这边走！,二、情态动词 must/can/could 表示推测,我们学习过情态动词 can 和 could 表示“能够，可以”等意义的用法。can 和 could 还可以表示对现在或将来的推测，意为“会, 可能”，但 can 表示推测时，往往用于否定句和疑问句。用于疑问句时，can 比 could 表示的“可能性”要大；用于否定句时，cannot（cant）表示“不可能”。例如： You ca
10、nt be serious! 你不是认真的吧！,could 则可用于肯定句、否定句和疑问句。在以下例句中，can 和 could 均表示可能： He could be in pain. 他可能很疼。 That could be harmful! 那可能有害！ Can/Could this be true? 这有可能是真的吗 ?,情态动词 must 也可以表示猜测，意思为“一定，准是”，通常只用于肯定句。如课文中的例子： Betty, you must know! 贝蒂，你肯定知道！,请仔细对比下列一组句子： Who sent the present? Can it be your brothe
11、r? 是谁送来的礼物啊？会是你哥哥吗？（询问可能性） It must be your brother. I saw him in your room just now. 肯定是你哥哥，我刚才看见他在你的房间里。（语气强烈，表示非常肯定） It cant be my brother. He is still in France. 不可能是我哥哥，他还在法国呢。（表示不可能）,以下部分为课本练习，供老师在对答案时选择使用。,1 It is dangerous. You _ keep out! 2 These stairs are not safe. You _ use them. 3 The ro
12、cks are falling down. You _ get hit. 4 The river is too deep. You _ swim in it. 5 Betty _ know what to do because she did some basic medical training.,must,mustnt,Complete the sentences with could, must or mustnt.,1,P100,could,mustnt,must,Underline the correct words to complete the first aid instruc
13、tions.,1 Get / Do not get medical help immediately. 2 Ask / Do not ask the where the pain is. 3 Lift / Do not lift then because you may drop them. 4 Keep / Do not keep them warm.,2,P100,When there is an earthquake. 1 _ from the windows. 2 _ a table. 3 _ the lift. 4 _ the building quickly when the gr
14、ound stops shaking. 5 _ calm.,Stay away,Hide under,Do not use,Leave,Keep,do not use hide under keep leave stay away,Complete the poster about earthquakes with the correct form of the words and expressions in the box.,3,P100,Tony: Daming is training hard for the big match. Lingling: Yes, the team has
15、 a good (1)_ this year. Tony: Oh no, Damings (2)_. Hes down! Lingling: It looks like hes (3)_. Tony: Daming, what happened? Daming: Its my leg. Lingling: (4) _ him with my coat. Tony: But dont move him. Lets wait for someone with (5) _ training. Lingling: OK.,chance,in trouble,in pain,chance Cover in pain in trouble medical,Cover,medical,Complete the conversation with the words and expressions in the box.,4,P101,Information is coming in that there could be (1) _ because
