1. Have you ever taken

2. provide

3. spent

4. is

5. is practicing

6. Did your family move

7. were produced

8. will visit

9. coming

10. herding

11. came

12. belong

13. starts/ends

14. are ... speaking

15. has learned

16. have been/have never visited

17. will organize

18. were built.

*GT: - QKĐ: (+) S + V-ed/VII

                    (?) Did + S + V-infinitive? 

- HTHT: (+) S + have/has + VII

             (?) have/Has + S + VII?

- HTTD: (+) S + am/is/are + V-ing

              (?) Am/Is/Are + S + V-ing?

- TLĐ: (+) S + will + V-infinitive 

- go + V-ing

- fancy + V-ing.

$\text{1. Have you ever taken}$

$\text{2. provide}$

$\text{3. spent}$

$\text{4. is}$

$\text{5. is practicing}$

$\text{6. Did your family move}$

$\text{7. were produced}$

$\text{8. will visit}$

$\text{9. coming}$

$\text{10. herding}$

$\text{11. came}$

$\text{12. belong}$

$\text{13. starts - ends}$

$\text{14. are - speaking}$

$\text{15. has learned}$

$\text{16. have been - have never visited}$

$\text{17. will organize}$

$\text{18. were built}$

--------------------------------------------------------

Công thức thì quá khứ đơn: S + v2/ed

Công thức thì hiện tại đơn: S + v(s/es)

Công thức thì tương lai đơn: S + will + v-inf

Công thức thì hiện tại hoàn thành: $\text{(+) S + have/has + v3/ed}$

$\text{(-) S + have/has + not (haven't/hasnt') + v3/ed}$

$\text{(?) Have/has + S + v3/ed?}$

Công thức thì hiện tại tiếp diễn: $\text{(+) S + is/am/are + v-ing}$