How long  is it since + S (last)+ Ved/2…..?  When did + S +  Vo + O?                How long  have/ has + S + Ved/3…..?  When did + S + start/ begin to V/ V-ing…….? When did + S +  Vo + O?                   1. How long is it since you sold that car?   When _____________________________________________? 2. How long is it since you last saw her? à When _____________________________________________? 3. How long is it since you ate some meat?  When _____________________________________________? 4. How long have you worked as a waiter here? When _____________________________________________?

Phương pháp làm:

- Lấy câu hỏi và thay đổi từ điểm dừng của chúng để tạo thành câu trả lời.
- Để trả lời câu hỏi "When did + S + Vo + O?", ta cần chỉ rõ thời điểm hoặc khoảng thời gian mà hành động đã xảy ra.

Ví dụ:

1. How long is it since you sold that car?
- When did you sell that car?

2. How long is it since you last saw her?
- When did you last see her?

3. How long is it since you ate some meat?
- When did you last eat some meat?

4. How long have you worked as a waiter here?
- When did you start working as a waiter here?

4. I have worked as a waiter here for 3 years.

3. I haven't eaten meat in over a year.

2. The last time I saw her was a year ago.

1. It's been 6 months since I sold that car.