Упражнение 14. Вставьте модальные глаголы should, need и to have to. Раскройте скобки, употребляя требующуюся форму
инфинитива.
1. She won’t be at the institute today. She … (to go) to the doctor.
2. He looks unhealthy. I think he … (to go) to the fitness club. 3. I have
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a lot of time. I … not (to hurry). The film has not started yet. 4. We …
not (to go) shopping. There is plenty of food in the fridge. 5. You … not
(to tell) them the news; they know it already. 6. We are not very busy.
We have got a few things to do but we … not (to do) them right now. 7.
They have got lots of exams next week, so they … to work really hard.
8. It was Sunday, and we … not (to go) to the university. 9. Must he take
part in the competitions? -No, he … 10. You … not (to be) so impatient
with them.

1. She won’t be at the institute today. She needs to go to the doctor.
Explanation: Since she won't be at the institute, it is necessary for her to go to the doctor. "Need" expresses necessity or obligation.

2. He looks unhealthy. I think he should go to the fitness club.
Explanation: Based on his appearance, it is advisable for him to go to the fitness club. "Should" suggests a recommendation or advice.

3. I have a lot of time. I don't need to hurry.
Explanation: Since there is plenty of time, there is no necessity to rush. "Need" indicates lack of necessity.

4. We don't need to go shopping. There is plenty of food in the fridge.
Explanation: Since there is enough food at home, there is no necessity to go shopping. "Need" expresses a lack of obligation.

5. You don't need to tell them the news; they know it already.
Explanation: Since they already know the news, there is no necessity to inform them. "Need" indicates lack of obligation.

6. We are not very busy. We have a few things to do but we don't need to do them right now.
Explanation: Although there are a few tasks, there is no immediate necessity to do them. "Need" suggests lack of obligation.

7. They have got lots of exams next week, so they have to work really hard.
Explanation: Due to the upcoming exams, it is necessary for them to work really hard. "Have to" expresses obligation.

8. It was Sunday, and we didn't have to go to the university.
Explanation: Since it was Sunday, there was no obligation for us to go to the university. "Didn't have to" indicates lack of obligation.

9. Must he take part in the competitions? -No, he doesn't have to.
Explanation: It is not obligatory for him to participate in the competitions. "Doesn't have to" expresses lack of obligation.

10. You shouldn't be so impatient with them.
Explanation: It is not advisable for you to be impatient with them. "Shouldn't" suggests a recommendation or advice.