nhớ học thuộc nha quan trọng lắm đó nha
Công thức
(+) S + have/ has + PII
(-) S + haven't/ has'tn +PII
(?) Have/ has + S + PII
5. paid
6. have taken
7. have finished
8. Have you eaten
9. hasn't come
10. have worked
11. Have you ever been
12. have done
13. seen/ has already done
14. have just decided
15. has been