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2. We began to drink milk tea when it started to rain.

3. Harmony's room hasn't been tidied since last Saturday.

4. The last time he saw a sandstorm was several weeks ago.

5. We last baked lemon cupcakes 2 weeks ago.

6. The last time the trees were watered was 3 days ago.

7. My room hasn't been painted since last Sunday.

8. The last time the trees were watered was 3 days ago.

9. Blood hasn't been donated by Robert since last July.

10. Joke books have not been read by Alex for 3 days.

Đáp án:

2. We began drinking milk tea when it started to rain.

3. Harmony's room hasn't tidied since last Saturday.

4. The last time he saw a sandstorm was several weeks ago.

5. We last baked lemon cupcakes two weeks ago.

6. The last time the trees watered was 3 days ago.

7. My room hasn't painted since last Sunday.

8. giống câu 6

9. Blood hasn't donated by Robert since last July.

10. Joke books have been read by Alex for three days.

Giải thích: Các cấu trúc cần nhớ:

- S+last +V(quá khứ đơn)+mốc thời gian trong quá khứ.

( Lần cuối ai đó làm gì từ khi nào)

- The last time +S+V(quá khứ đơn)+was+mốc thời gian trong quá khứ.

(Lần cuối ai đó làm gì là khi nào)

- S+haven’t/hasn’t+VpII+for+khoảng thời gian/since+mốc thời gian.

(Ai đó không làm gì được bao lâu/từ khi nào)

- S+started/began+to V(nguyên thể)/Ving+trạng từ chỉ thời gian trong quá khứ.

(Ai đó đã bắt đầu làm gì khi nào)