16. Steve started working for this company five years ago. - Steve..... 17. Do you have any experience of driving this kind of car ? Have 18. Nancy hasn't come here since 1999. The last time.... 19. We haven't gone to a concert for ages. - It's 20. Sarah hasn't seen her friends since she left for the US. - Sarah last... 21. I have never stayed in such an expensive hotel before. 1 This is 22. My father learned to drive when he was sixteen. - My father has 23. The garden still needs digging. - The garden hasn't -

16. Steve has worked for this company for five years./ Steve has been working for this company for five years. -> chuyển từ QKĐ sang HTHT, S have/has V3/ed, for + khoảng thời gian -> cũng có thể chuyển sang thì HTHTTD : S + have/has been Ving (hành động bắt đầu trong quá khứ, tiếp tục ở hiện tại và có thể tiếp diễn trong tương lai)

17. Have you ever driven thís kind of car before? -> Have/has S ever V3/ed?

18. The last time Nancy came here was in 1999. -> the last time + QKĐ (lần cuối)

19. It's for ages since we went to a concert. -> It's + time + since QKĐ

20. Sarah last saw her friends when she left for the US. -> S last V2/ed

21. This is the first time I have stayed in such an expensive hotel. -> this is the first time + HTHT (lần đầu tiên)

22. My father has been able to drive since he was sixteen./My father has been driving since he was sixteen. -> be able to V ~ can V

23. The garden hasn't been dug yet. -> yet (bị động HTHT have/has not been V3/ed)