Question

Complete the sentences with the correct form of a modal verb to express ability, obligation, prohibition or to give advice.

1 You really pay much attention to Philip. He’s always making fun of everyone. (advice)
2 At our school, all the students wear a uniform. (obligation)
3 We print out these pages because the printer’s not working. (ability)
4 You sit down on that bench because the paint is wet. (prohibition)
5 OK, you hand in the homework tomorrow. I’ll give you until Friday. (obligation)
6 When my dad was younger he use a computer. No one had ever taught him. (ability)
7 My brother thinks I get my hair cut. He says it’s too long. (advice)
8 I’ve been calling Paul all day but I speak to him yet. (ability)
9 My mum worked in the USA so she speak English at work. (obligation)
10 We’re installing some new software so you switch off the computer. (prohibition)

Answer 1

1 You really shouldn't pay much attention to Philip. He’s always making fun of everyone. (advice)

2 At our school, all the students must wear a uniform. (obligation)

3 We can't print out these pages because the printer’s not working. (ability)

4 You must sit down on that bench because the paint is wet. (prohibition)

5 OK, you must hand in the homework tomorrow. I’ll give you until Friday. (obligation)

6 When my dad was younger he could use a computer. No one had ever taught him. (ability)

7 My brother thinks I should get my hair cut. He says it’s too long. (advice)

8 I’ve been calling Paul all day but I can't speak to him yet. (ability)

9 My mum worked in the USA so she must speak English at work. (obligation)

10 We’re installing some new software so you must switch off the computer. (prohibition)

para obrigação você pode falar "have to(gotta bem informalmente)" mas para um exercício é melhor colocar must mesmo

Obs: o n't é abreviação, por exemplo shouldn't = should not

Answer 2

1. You really shouldn’t pay much attention to Philip. He’s always making fun of everyone. (advice)

2. At our school, all the students must wear a uniform. (obligation)

3. We can’t print out these pages because the printer’s not working. (ability)

4. You mustn’t sit down on that bench because the paint is wet. (prohibition)

5. OK, you don’t have to hand in the homework tomorrow. I’ll give you until Friday. (obligation)

6. When my dad was younger he couldn’t use a computer. No one had ever taught him. (ability)

7. My brother thinks I should get my hair cut. He says it’s too long. (advice)

8. I’ve been calling Paul all day but I haven’t been able to speak to him yet. (ability)

9. My mum worked in the USA so she had to speak English at work. (obligation)

10. We’re installing some new software so you mustn’t switch off the computer. (prohibition)