Look at these rules for the computer game. write sentences with ‘must’ and ‘mustn’t’. example 0. find the magic key. answer 0. you must find the magic key. 1. don’t let the guards catch you. 2. be careful with the dogs in this tower. 3. run away from the tower.

1. I haven't cleant my football boots.
2. They haven't started their meal.
3. I haven't done my homework.
4. He hasn't win all his matches this year.
5. My brother and I haven't seen any films this week.
6. It's my birthday party today. I haven't invited many people.
7. He hasn't washed his hands. They're very dirty.
8. Mum'sreally angry. We haven't tidied our room!
9. I can't play with my friends this evening. I haven't finished my homework.
10. I haven't visited New York for three years.
11. Where's Alison? We haven't seen her since yesterday.
12. Dad hasn't taken a holiday since last Augutt.
13. John hasn't played the violin since he was in school.

1 haven't cleaned
2 haven't started
3 haven't done
4 hasn't won
5 haven't seen
6 haven't invited
7 hasn't washed
8 haven't tidied
9 haven't finished
10 haven't visited
11 haven't seen
12 hasn't taken
13 hasn't played

Схема построения отрицательного предложения:
Вс глагол ( have /has) + отрицательная частица not + основной глагол в третьей форме для неправильных глаголов или окончание -ed для правильных . Has используется с местоимениями she, he, it have со всеми остальными. Пример : He HAS NOT WON all his matches this year.