1、C H A P T E RFIVE6-1Can you get me a packet of electricity, please?We use can and cannot (cant)to say we are able or not ableto do things.I can count.You cannot spell.Can they dance?Yes, he can./No, she cant.When we use modal verbs, for example, can and cannot with other verbs, the verbs following t

2、he modal verbs do not change their form.6-26-3A Read what Hi and Lo say about themselves.Then say if the statements below are T (True) or F (False).I can swim, dance, play football and speak two languages. I cant cook, play the guitar or ride a bicycle.I can fly, dance, play chess and speak ten lang

3、uages. I cant type, paint pictures or drive a car.6-4Hi can play football.T / FLo cannot paint pictures.T / FHi can speak more languages than Lo.T / FHi and Lo can both dance.T / FLo can drive a car, but he cannot play chess.T / FHi can swim, but he cannot play the guitar. T / FLo can fly and type.T

4、 / F6-5B Look at the pictures. Ask questions and giveanswers about them. Use the words in the box to help you.subtractspelladdmultiplyS1 _ Kitty _?S2 _6-6S1 _ Kitty _?S2 _S1 _ Derek _?S2 _S1 _ Kitty _?S2 _5-1May I have my packet of electricity, please?Yes, you may.We use may and may not to askfor an

5、d give permission. We also use can and cannot (cant) forthe same purpose.You/He/She may/can sit down.You/He/She may not/cannot leave.May/Can they come in?Yes, they may/can.No, they may not/cant.5-2A Benny meets his sister in the park and walks homewith her. He is very polite. What is he asking her?

6、Make questions for Benny. Use May or Can and the words in the box.5-3borrow your new bicyclecarry your bag for youget you a chairopen the doorswitch on the TVMay/Can I carry your bag for you?May/Can I open the door?5-4borrow your new bicyclecarry your bag for youget you a chairopen the doorswitch on

7、 the TVMay/Can I get you a chair?May/Can I switch on the TV?May/Can I borrow your bicycle?5-5B Ask proper questions according to the givensituations, using May or Can.If you stand up and the teacher has forgotten to tell you to sit down, what can you say?If it is very hot in the classroom, what can

8、you say?If you find it very difficult to breathe because the room is too stuffy, what can you say?If it is raining outside, what can you say?If you want to go to the toilet, what can you say?May I sit down, please?May I turn on the fan, please?May I open the windows, please?May I close the windows,

9、please?May I go to the toilet, please?/May I be excused, please?10-1You must always be careful with electricity.We use must and must not (mustnt) to tell people whatto do or what not to do.I/You/He/She must turn it on.You must not switch it off.Must they leave?Yes, they must./No, they neednt.10-2A W

10、e often use signs as well as words to tellpeople what to do or what not to do. Work in pairs to explain these signs. S1 says the sentences to S2. S2 gives the letters of the signs.10-310-4You must turn left.You must be careful.You must not smoke.You must pay ten yuan.You must not cycle.You must not

11、turn right.You must not make a noise.You must not enter.hedgacbf10-5B Mimi works for a newspaper. She answers lettersfrom readers with problems. Read these two letters and answer them using must or must not and words in the box.make friends with more peopleeat so many sweetsdo more exercisespend so

12、muchstay up so lateeat so muchwork hardereat more10-6Dear HopefulYou _Mimi must not eat so much. If you do not want to feel tired, you must not stay up so late. You must work harder to get higher marks at school. If you have toothache, you must not eat so many sweets.10-7Dear HopefulYou _Mimi must n

13、ot eat so much. You must work harder but must not stay up so late. You must not eat so many sweets.10-8Dear WorriedYou _Mimi must eat more and do more exercise if you think you are too thin. You must not spend so much if you are always short of money. You must do more exercise to make your body stro

14、nger, and if you make friends with more people, you will not feel lonely.10-9Dear WorriedYou _Mimi must eat more and do more exercise. You must also make friends with more people and must not spend too much.C Work in pairs. Write to your partner about two of your problems. Then read your partners pr

15、oblems and write a letter telling him or her what to do. Follow the examples below.10-10Dear HelenMy problems are that I can never sleepat night and I have bad skin. Can youhelp me?DesperateDear DesperateYou must not drink coffee or tea in the evening if you want to sleep well. You must wash your face several times each day and use the right face cream if you want to have cle