=>
5. It has rained for one hour.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, for + khoảng thời gian
6. She started teaching English 15 years ago.
-> started Ving : bắt đầu làm gì
7. We have worked in this factory since 1990.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, since + mốc thời gian
8. We have eaten since it started to rain.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, since + mốc thời gian
9. She has driven for 1 month.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, for + khoảng thời gian
10. She has learned English for 3 years.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, for + khoảng thời gian
11. They have played tennis since they were 6.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, since + mốc thời gian
12. He has worked for this company since 2002.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, since + mốc thời gian
13. He has collected stamps for 4 months.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, for + khoảng thời gian
12. Alex has learned Vietnamese since last month.
-> chuyển QKĐ sang HTHT, S have/has (not) V3/ed, since + mốc thời gian