1、Unit 2 Lets celebrate! To get to know some modal verbs. To learn how to use modal verbs to make prediction. To learn how to introduce a traditional Chinese festival. 1 Look at the sentences from the reading passage and answer the questions. a That is why Letters from Father Christmas could be the pe
2、rfect book b The children must have been very excited as they opened it. c they might not receive their presents if they were not good. 1) What do the words in red indicate: an order, a request, ability or possibility? They indicate possibility. 2) Will the meaning of sentence (a) change if we repla
3、ce “could” with “must” or “might”? If we replace “could” with “must”, the meaning of sentence (a) will change. It means the speaker is quite sure about the statement. If we replace “could” with “might”, the meaning of sentence (a) will remain more or less the same. “Could” and “might” in affirmative
4、 sentences have a similar meaning when indicating possibility. v. 表明表明, 显示显示 n. 请求请求, 要求要求 3) What happens if we change “must” and “might” in sentences (b) and (c) into “could”? If we change “must” in sentence (b) into “could”, it means the speaker is not sure about the statement, and its only a pos
5、sibility. If we change “might” in sentence (c) into “could”, it means its impossible for the children to receive presents. Look for more sentences with modals in the reading passage. 1) The letters were also beautifully illustrated - each must have taken its true author, Tolkien, a long time to comp
6、lete. 2) In another letter, Father Christmas complained about how he could not stop his helpers playing games with the toys in stead of wrapping them up. 3) Who could it be from? 4) we can all share the true spirit of giving at Christmas time. 情态动词情态动词must, can/could, may/might均可表均可表 示推测示推测, 它们可以对过去
7、、现在或将来的情它们可以对过去、现在或将来的情 况作出语气强弱不同的推测。况作出语气强弱不同的推测。 把握推测语气的特点，选择恰当的情态动把握推测语气的特点，选择恰当的情态动 词。词。 1. 表示肯定的推测时，各情态动词语气从表示肯定的推测时，各情态动词语气从 弱到强依次为弱到强依次为might may could can must； 表示否定的推测时表示否定的推测时, cant / couldnt语气较强，语气较强， 意为“不可能”；意为“不可能”；may not / might not语气语气 较弱，意为“可能不”。较弱，意为“可能不”。 注意：注意： must的否定形式的否定形式must
8、nt不表示否定推测，不表示否定推测， 而是表示“不许可”或“不应该”。而是表示“不许可”或“不应该”。 2. 情态动词表示推测时情态动词表示推测时, 在用法上有一些限制在用法上有一些限制: must只用于肯定句中，意为“一定，准只用于肯定句中，意为“一定，准 是”。是”。如如: This must be your room. could多用于否定句和疑问句中。多用于否定句和疑问句中。如：如： He looks young. He couldnt be over 50. Could it be true? may / might用于肯定句和否定句中。用于肯定句和否定句中。如：如： They ma
9、y not know his address. She told me that she might go to Hawaii this winter. 确定被推测时间，正确判断动词时态。确定被推测时间，正确判断动词时态。 1. 对现在或将来的情况进行推测时，用“情对现在或将来的情况进行推测时，用“情 态动词态动词+ do”。如：如： You must be Mr. Smith. I was told to expect you. Our team might win the race. 2. 对此时此刻正在进行的情况进行推测时，对此时此刻正在进行的情况进行推测时， 用“情态动词用“情态动词+
10、 be +动词动词-ing形式”。形式”。如：如： She may be waiting for you in the entrance hall at the moment. The police are stopping all cars. They must be looking for the escaped prisoner. 3. 对过去的情况进行推测时，用“情态动词对过去的情况进行推测时，用“情态动词 + have +过去分词”。过去分词”。如：如： I didnt see Alex. He might have gone home. I couldnt have left my
11、 bag on the bus. They must have gotten lost or theyd be here by now. 【拓展拓展】 在特定的语境中，“在特定的语境中，“might / could + have +过去过去 分词”不是对一件事情是否发生进行推测，而是分词”不是对一件事情是否发生进行推测，而是 表示本来可能发生但没有发生，或者本来可能完表示本来可能发生但没有发生，或者本来可能完 成却没有完成的动作，有时具有一定的感情色彩。成却没有完成的动作，有时具有一定的感情色彩。 might have done本可以做本可以做(却没有却没有), 有时表示很有时表示很 委婉的责
12、备。委婉的责备。如：如： Honestly, the report might have been better written. could have done本可能做本可能做(却没有却没有)。如：如： He did not regret saying what he did but felt that he could have expressed it differently. 2 Rewrite the underlined sentences in the conversation using can/could, may/might and must. (At a fancy dr
13、ess party) Chris: I spent ages putting up all the balloons and flowers last night. Jean: I expect you are feeling tired now! Chris: Yes, I am. Look that guy is dressed as Batman. Is that Mike? Jean: Its possibly him. Check out that girl over there. Im sure thats Lucy. Chris: No, I dont think thats L
14、ucy. Lucy isnt that tall. Jean: Look at those two guys dressed as chickens! Oh, theyre waving at us! Maybe theyre from our school. Chris: Lets go and find out. You must feel tired now! It may/might/could be him. That must be Lucy! that cant be Lucy! They may/might/could be from our school. Black Fri
15、day is one of the busiest shopping days of the year. Stores have big sales and open their doors very early. 3 Look at the picture and make as many sentences as possible using can/could, may/might and must. The woman in red must be very excited to buy so many things. The man with a wallet in his hand
16、 might be a bit reluctant to pay. The woman in glasses may be very tired to get up so early and carry so many bags. The cashier might be feeling uncomfortable as he is sweating a lot. Do you know Singles Day? Watch the video and make as many sentences as possible using can/could, may/might and must.
17、 4 Underline the words and expressions about celebrations during the Lantern Festival in the speech bubbles and complete the mind map. Add any more you can think of. flowers, a scarf a red envelope, a dress rice balls, dumplings balloons, posters banners, flowers hold a lantern fair, let off fireworks hold a lantern riddles competition, have a reunion dinner Describe a festival celebration using the words and expressions you have learnt. To celebrate, we often drink/eat, give as gift, decorate with
