/Unit 2 Healthy eating Grammar & Writing.用适当的情态动词完成下列句子1In some parts of the world, you _ boil the water before drinking it.2I didnt see her in the meeting room this morning. She _ have missed the meeting.3You _ keep a firstaid box at home for any accident.4You _ run, for we have enough time to catch the train.5 You _ have finished the article. The deadline is last Friday. Sorry. I have been busy these days. Could you give me 3 more days?6 _ I water the trees on Tuesday? No, you neednt.7He is so strong that I _ fight against him.8We _ (receive) the letter yesterday, but it didnt arrive.9When we got to the cinema, the film hasnt started yet, so we _ (hurry)10When I got to the cinema, the film had already started; I _ (get) there earlier.答案：1.must/have to2.must3.ought to/should4.neednt/dont have to5.should6.Must7.dare not8.ought to have received9.neednt have hurried10ought to have got/should have got.完成句子1I _ (不得不参加) an important meeting this afternoon.2You _ (一定不能玩) with fire, or youll get burnt.3Something is wrong with my bike. So my bike _ (需要修理)4You _ (不必归还) the book now. You can keep it until next week if you like.5You _ (本不必告诉) him the news; I had told him.6Mary _ (本不该说) the words, but she wanted to warn you against that man.7The light is on in his office. He _ (一定在工作) there now.答案：1.have to attend2.mustnt play3.needs repairing/to be repaired4.neednt/dont have to return5neednt have told6.shouldnt/ought not to have said7must be working.单句改错1Tom ought not to tell me your secret, but he meant no harm._2You mustnt come if you dont have to._3You have not to work so hard if you just want to pass the exam._4Because of the heavy rain，the children ought get up earlier than usual._5They oughtnt to go fishing in this river，ought to they?_答案：1.tellhave told2.mustntneednt3.have not todont have to4.ought后加to5.去掉第二个to.用方框内所给情态动词填空Thank you for your letter. I dont think I 1._ give you any advice. I dont think the manager 2._ trust you. It sounds as if he has decided that you 3._ be the thief. Do you have to continue working at this company? Maybe you 4._ find another job where the people are friendly. I think you 5._ enjoy that more.If you stay at the meat factory, you 6._ not be able to be happy. Besides, if you stay, the thief 7._ do something bad to you. I dont think that 8._ be very pleasant. If he played a trick on you, the manager 9._ say you were the thief and call in the police. That 10._ have serious results. I think the best thing you 11._ do now is to look for another job and hope that it 12._ turn out better.Yours sincerely，Mike答案：1.can2.will3.must4.should/ought to/can/need5.may/might/will6.will7.may/will/might8will9.might/would10.may/will/might11can/should/ought to/need12.will/would.阅读理解Today fast food restaurants are very popular. One famous name is Harrys Hamburgers. Harrys Hamburgers come from America and have been in business for thirty years. There are about 5,000 Harrys Hamburgers in different countries. The food is the same everywhere. In London, New York or Paris people eat the same hamburgers and drink the same drinks.Hamburger Harry is a special friend of children everywhere. He goes to schools and talks to pupils. He goes into different classrooms, sits down on the carpet or at the desk and asks the pupils to relax. Then he begins his talk.Harry teaches children about litter. “Dont throw your boxes on the floor in my restaurants，” he says. “And dont throw my bags away in the street. If you see boxes and bags in the street, pick them up and throw them into the bin (垃圾箱)”Hamburger Harry visits children in hospitals and tells them funny stories. His restaurants give wonderful birthday parties. Parents telephone the restaurant or go there. They choose a good day for the party, arrange the food and drink and send invitations to friends. Hamburger Harry sometimes comes to the party with a bag of presents and a big birthday cake. The boys and girls sit round the tables and eat all their favorite food. They all wear paper hats and party badges(徽章). Hamburger Harry dresses in green, red and yellow and he wears two big badges. He works hard at the party. He tells