1. I have taught English since 2000.
2. My sister has taught English since she was 25 years old.
3. It has rained for half an hour.
4. They started rebuilting/ to rebuilt this hotel was last year.
5. He began having/to have his breakfast was 7 o'clock.
6. My father started talking/ to talk to my form teacher an hour ago.
7. She has worked here for 20 years.
8. John started writting/ to write the essay 30 mins ago.
⇒ S + began / started + to V/ V-ing + (was) + time (ago): Bắt đầu làm gì
= S + have/has + V3/ed + for + khoảng thời gian
since + mốc thời gian
