Use of modals

1. Circle  the correct words.

Some new research suggests that garlic 1 may / must be good for a number of diseases, not just for colds. It is possible that it 2 can’t / could also help to prevent heart disease and cancer. It’s easy to add more garlic to your diet – garlic 3 can / may add flavour to all kinds of soups and salads or even cakes and biscuits, although I’m sure they 4 must / can’t taste very good. My grandma eats garlic every day, but her doctor told her to stop eating garlic before she went into hospital so it 5 can’t / must have some effect on your blood. I’m sure that garlic 6 must / can’t keep her healthy because she’s ninety-five years old!

2. Complete the sentences with might, can, must or can’t and suitable verbs.
1 Steve’s coughing and sneezing a lot – he__________________a cold!
2 Sally’s not at school today. Do think she__________________ ill?
3 We don’t sell garlic tablets here but you__________________  them in a herbal shop.
4 I’ve heard that eating carrots__________________ your eyesight. Is it true?
5 This recipe is so easy – it__________________ a long time to make it.
6 They say that vitamin B __________________your brain work better!


3 Complete the conversations using the correct form of have to or must. 

1 A: I hate broccoli! Why__________________ I __________________eat broccoli?
B: You__________________ eat vegetables. They’re good for you!
2 A:__________________ your brother__________________ do sports after school?
B: No, he__________________ , but he usually goes twice a week.
3 A: __________________you __________________wear a uniform at your last school?
B: Yes, we __________________wear white shirts and blue ties. I hated it.

4 Match the sentence halves.

a) Do you have 

b) They don’t 

c) Teresa has 

d) We must 

e) Steve had to 

f) Why do we

1... finish our homework before dinner. 

2... have to go in early tomorrow? 

3... have to go to school today.

4... to eat lunch at school?

5... to go to the dentist tomorrow. 

6... work late yesterday.


Read: https://julioteacher.blogspot.com/2011/01/modal-verbs.html

Theory: https://julioteacher.blogspot.com/2017/03/modal-verbs.html