Must - должен, must not - не должен

1.

must - должен
I
You
He
She
It
We
They
must play
must not - не должен
mustn’t
I
You
He
She
It
We
They
mustn’t play

2.

You must read and write in the lesson.
Ты должен (вы должны) читать и писать на уроке.
You mustn’t sleep in the lesson.
Ты не должен (вы не должны) спать на уроке.
Children must be quiet in the lesson.
Дети должны вести себя тихо на уроке.
They mustn’t run and jump in the lesson
Они не должны бегать и прыгать на уроке.

3.

must / mustn’t
must
1. You
…
help your mum.
2. You mustn’t
…
drink cold water.
3. You must
…
clean your teeth.
4. Youmustn’t
… eat much ice cream.
5. You mustn’t
…
hurt your pet.
must
6. You …
look after your pet.
hurt – причинять боль
look after – заботиться

4.

1. drink, You, juice, must
You must drink juice.
2. run, must, The pupils, in the lesson, not
The pupils must not run in the lesson
3. must, I, my teeth, every day, clean
I must clean my teeth every day.
4. sleep, not, must, We, in the lesson
We must not sleep in the lesson.