Ответ:

1. - i didn't go for rowing at the age of 8.

? did we go in for rowing at the age of 8?

2. - we don't spend much time in the sports ground yesterday.

? do we spend much time in the sports ground yesterday?

3.- our team didn't win four silver medals last year.

? did our team win four silver medals last year?

4. - this weightlifter didn't train much years.

? did this weightlifter train much years?

5.- many sportsmen didn't achieve Master of Sport standard last month.

? did many sportsmen achieve Master of Sport standard last month?

6. - P. Lesgaft didn't creat the theory of physical education.

? did P. Lesgaft creat the theory of physical education?

7. - the runner didn't cover this distance for an hour.

? did the runner cover this distance for an hour?

8. - he didn't set many records in the track-and-field events last year.

? did he set many records in the track-and-field events last year?

9. - tactical thinking didn't enable him to win

? did tactical thinking enable him to win?

Объяснение:

present simple

+ i, we, you, they + verb(глагол)

he, she, it + verb + -s

- i, we, you, they + don't + verb

he, she, it + doesn't + verb

? do + you, we, they + verb

does + he, she, it + verb

past simple

+ i, we, you, they, he, she, it + verb + -ed или форму глагола в прошлом времени, если он неправельный.

- i, we, you, they, he, she, it + didn't + verb

? did + i, we, you, they, he, she, it + verb