Question

chia động từ và nêu dấu hiệu để chia động từ đó

1 he (start) to play the violin five years ago

2 he (ride) a horse before

3 john (not go) to school for over six month

4 the flight to moscow (last) three and a half hours

5 three year ago he (be) a student at a university in california

6 he wrote four best-sellers before he (be) twenty years old

7 when you(see) mary?

Answer 1

1 he (start) started to play the violin five years ago

2 he (ride) rode a horse before

3 john (not go) hasn't gone to school for over six month

4 the flight to moscow (last) last three and a half hours (chuyến bay, lịch trình được chia ở thì hiện tại đơn)

5 three year ago he (be) was a student at a university in california

6 he wrote four best-sellers before he (be) was twenty years old

7 when did you(see) see mary?