5. they mean the same! there are many ways to say the same things in english. can you match the phrases which mean the same? match the phrases with the same meaning. perhaps he is working now. i am sure he didn't work yesterday. he is likely to work tomorrow. перетащите элементы на пустые поля сверху (каждый может быть использован несколько раз) he can't have worked then. he can be working that time. he might be working tomorrow. he has to work tomorrow. he couldn't have worked yesterday. he may be working now. he could be working now. he must not work then.
1 He is likely to work tomorrow = He might be working tomorrow = He has to work tomorrow
2 Perhaps he is working now = He can be working that time = He may be working now = He could be working now
3 I am sure he didn't work yesterday = He can't have worked then = He couldn't have worked yesterday = He must not work then