1.Dorothy started watering the flowers two minutes ago.

- DHNH : ago ( Quá khứ đơn )

- Start + V_ing : bắt đầu làm một việc gì đó

- Cthuc : S + V2/ed.....

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2.They weren’t in Bangkok in the past.

- DHNB : In the past ( Quá khứ đơn )

- Have/Has never been to... = was not / were not in.....

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3.Đề không đủ dữ liệu

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4.I haven't play chess since last year.

- DHNB : Since ( Hiện tại hoàn thành )

- Cthuc : S + have/has + V3/ed .....

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5.My father came in one minute ago.

- DHNB : ago ( Quá khứ đơn )

- Cthuc : S + V2/ed....

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CHÚC BẠN HỌC TỐT

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1. Dorothy watered the flowers two minutes ago.

2. They did not go to Bangkok in the past.

3. Bạn xem thiếu đề không nhé.

4. I haven't played the chess since last year.

5. My father came in one minute ago.

Thì QKĐ: S V2/ed

Thì HTHT: S have/has V3/ed