Смотри, объясняю: Past Simple имеет концовку -ed и главное слово did. Если предложение утвердительное, то глагол сохраняет -ed. Например:
He did his homework and then he watched the film.
Если же предложение негативное, то к did добавляем not и получается didn't. Если стоит didn't, то окончание -ed испаряется. Например: he didn't watch this film.
Past Continuous (или как его ещё называют Past Progressive) имеет was и должен быть глагол с окончанием -ing. Например:
He was watching a film.
Тоже самое с негативным.
He wasn't watching a film.
Надеюсь, ты разобралась/разобрался.
Несколько названий. :
1.как правильно какать.
2.вонючий лимузин.
3санина.
1 have spoken
2 have learnt
3 has made
4 have heard
5 have lost
6 has seen
7 have told
8 has returned
9 has lost
10 have just mentioned
I,you,we, they-have
He,she, it-has
3 лицо единственное число has.все остальные-have.
Ответ:
1. That work could have been done (by the students without their teacher's assistance).
2. This project cannot be completed in a week (by them).
3. Can I be informed as soon as possible?
4. You will be sent some e-mails during a day.
5. The book couldn't be given back timely, could it?
6. This work must be done in time. Это уже passive.
7. You may not come here! Это нельзя поставить в passive, т.к. отсутствует object (дополнение)
8. He might be present at the lecture, mightn't he? Здесь сказуемое be present - нет глагола, тоже нельзя переделать.
9. The job had to be finished (by him).
10. Good marks are given to the students (by the teacher), aren't they?
Объяснение:
1. If I knew his number, I would call him.
2. I wouldn’t buy that coat if I were you.
3. I would help you if I could but I am afraid I can’t.
4. If we had the choice, we would live in the country.
5. This soup isn’t very good. It would taste better if it wasn’t so salty.
6. You are always tired. If you didn’t go to bed so late every night, you wouldn’t be tired all the time.
7. She would buy this book if she had enough money.
8. If he didn’t live so far away, we would see him more often.
9. I think there are too many cars. If there weren’t so many cars, there wouldn’t be so much pollution.
10. I would go out if it wasn’t so cold.