Номер 4, страница 33 - гдз по английскому языку 10 класс учебник Вербицкая, Маккинли

Unit 4. Mysteries. Grammar and speaking - номер 4, страница 33.

Условие.

4 Look at the sentences below. Which one talks about a situation in the past?

1 He must be Norwegian.

2 He must have been in the sea.

Check it out

Modal verbs for speculation

We use must/might/may/could/can’t + infinitive to speculate about whether something is true in the present.

He must come from Norway. (I’m certain it’s true.)

He might/may/could be an illegal immigrant. (I think it’s possible.)

He can’t be Norwegian. (I’m certain it isn’t true.)

We use must/might/could/can’t/couldn’t + have done (perfect infinitive) to speculate about whether something was true in the past.

He must have been in the sea. (I’m certain this really happened.)

He might/may/could have lost his passport. (It possibly happened.)

He can’t/couldn’t have lost his memory. (I’m certain it was impossible.)

Mind the trap!

The negative of must is can’t, not mustn’t.

He can’t be French – I’m sure his parents are both from Wales. NOT mustn’t be

He started work five minutes ago. He can’t have finished already! NOT mustn’t have finished

Решение.

Решение 2.

4 Посмотрите на предложения ниже. Какое из них говорит о ситуации в прошлом?

1 Он, должно быть, норвежец.

2 Он, должно быть, был в море.

Ответ:

Sentence 2 "He must have been in the sea." talks about a situation in the past. / Предложение 2 «Он, должно быть, был в море.» говорит о ситуации в прошлом.