Task3. Write your opinion. What has caused the drop in saiga numbers? What people should do?
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I can speak English. My father can not speak German. Can you speak French? My sister can not skating. Can you swim across this river? I can't drink this milk. She can't understand you. Could you swim last year? Last year I could not skiing, but now I can. Could you tell me how to get to railway station? Could you help me? I can't translate this sentence. Where can I buy bread here? Could your grandmother dance when she was young? Yes, she could and she can now.

Will you be able to do this work tomorrow? I think, she won't be able to make this task. Tomorrow I will be free and be able to help you. Will we be able to go to New York next year? Will you be able to fix my tape recorder?  Yesterday I could not see the director , because he was at the conference, but today after work I will be able to.

Упражнение 3

Can she play chess?

Can he play hockey?

May they go to the cinema?

May I open the window?

How often must children and adults clean their teeth?

Where must children go to?

What must English learners do every day?

What should you keep tidy?

Should children listen to their parent`s advice?

Should they be polite?

Упражнение 4.

1.your brother/ play/ table tennis/ can? – Yes, he…

Can your brother play table tennis? - Yes, he can.

2. your cousin/ can/ ride a horse? – No, he…

Can your cousin ride a horse? - No, he can't.

3.may/ go to/ I / the cinema/ – Yes, you…

May I go to the cinema? - Yes, you may.

4.late/ may/ come home/ she – No, she…

May she come home late? - No, she may not.

5.learn this poem/ must/ she/ by heart? – Yes, she…

Must she learn this poem by heart? - Yes, she must.

6.books/ how many/ they/ must/read? – Only two.

How many books must they read? - Only two.

7.wear/ smart clothes/ for the party/ should/ they? – Yes,…

Should they wear smart clothes for the party? - Yes, they should.

8.salt/ how much/ should/ put in the dish/ I ? – Just a little.

How much salt should I put in this dish? - Just a little.

9.the student/ mobile/ phones/ use/ can/ at the exams? – No, they…

Can the students use mobile phones at the exams? - No, they can't.

10.children/ come to school / in time/ must? – Yes, they…

Must children come to school in time? - Yes, they must

Упражнение 5.

you can't go to the party

He must take his dog for a walk.

I can help you

He mustn't be late

can his brother speak French?

Paul must go there

You mustn't smoke here.

Объяснение: