高中英語(yǔ)新課標(biāo)外研版必修4教案period2grammarfunctionpronunciationmodule5atripalongthethreegorges-展示頁(yè)
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【正文】 now the basic rules of modal ’s do some other at Activity sentences are all from the passage in them and answer the questions following them. (Show the following sentences on the screen.) __________go anywhere they wished. __________go on those ships. __________be any other foreigners. just __________show our passports. __________see the sun setting behind the white pagoda. verb is used as the past of must? verb indicates an ability to do something? verb makes a prediction about the future? verb is used to give advice? verb indicates the permission to do something? They are easy for the students to answer. Suggested answers: ’t ’t to to ’t ’t T:So much for this think you have got a good understanding of modal ’s do a further underline the correct verb in the following sentences. (Show the following on the screen.) should/shouldn’t visit the Three ’re beautiful. can/can’t reach the upper part of the Yangtze ’s too dangerous. should/shouldn’t go in water’s too low. must/mustn’t show their documents when they ’s the law. could/couldn’t see the mountains in the peaks were shining in the sunlight. children could/couldn’t find their way out of the were lost. had to/must return by the end of started work again in March. This part is also easy to two or three minutes’ preparation,ask the students to say the words they choose individually. Suggested answers: ’t ’t ’t to Then pair the students to ask and answer questions based on the sentences in the activity above,that is,Activity them take turns to ask and minutes later,ask some pairs to do questions and answers for the whole class. Step 3 Function T:That’s the end of class,do more exercises to consolidate modal ,look at Page ’ll talk about obligation,permission and you have any idea of the way to show them?First,for volunteer? Sa:We can use You must/should/ought to ... T:Yes,good idea!We can also use sentence pattern,such as:It is necessary to/that...You are required to...As for permission,what kind of sentence do we learn? Sb:You may or can... T:Good suggestion!Besides,we can use You are allowed to...I think you are clever to say expressions for prohibition,right? Ss:You can’t/mustn’t... and don’t... T:Good job!Now,let’s see some examples in Activity 1. (Show the following questions on the screen.) Choose the correct meaning. captain lets passengers use his cabin. (a)Passengers must use the captain’s cabin. (b)Passengers can use the captain’s cabin. (c)Passengers mustn’t use the captain’s cabin. are lectures— but you don’t have to go to them. (a)It is necessary to go to the lectures. (b)It isn’t necessary to go to the lectures. (c)It isn’t possible to go to the lectures. form the boat is forbidden. (a)You can swim from the boat. (b)You must swim from the boat. (c)You mustn’t swim from the boat. ’re not all
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