`1`. have just lost 

`2`. met - have - seen 

`3`.have - waited 

=> Cấu trúc : How long + have/has + S + V_ed/V3?

`4`.has come 

`5`.went - has just arrived 

`6`.did - buy - have wanted 

`7`.finished - finished 

`8`.haven't seen - did  - return 

`9`. Have - ever gone - have never been 

`10`.have - seen.

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

Công thức THTHT : 

(-) S + have/has + not +V_ed/V3.

(+) S + have/has + V_ed/V3.

(?) Have/Has + S + V_ed/V3?

- DHNB :  Just = Recently = Lately , Already , Since , before , never , ever , yet …

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

Công thức TQKĐ :

(+) S + V_ed/V2.

(-) S + did + not +V.

(?) Did + S +V?

Công thức thì HTHT

(+) S + has/have + V3/ed 

(-) S + has/have + not + V3/ed 

(?) Has/Have + S+ V3/ed?

DHNB: before, since + mốc thời gian, for + khoảng thời gian, yet, already, just,....

Công thức thì QKĐ (V: thường)

(+) S + V2/ed 

(-) S + didn't + V1 

(?) Did + S+ V1?

DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...

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

1. have just lost 

DHNB: just (HTHT)

2. met / have / seen 

DHNB: since (HTHT)

3. have / waited 

How long + has/have + S + V3/ed?

4. has come 

DHNB: yet (HTHT)

5. went / has just arrived 

DHNB: last week (QKD), just (HTHT)

6. did / buy / have wanted 

DHNB: since last week (HTHT)

7. finished / finished 

DHNB: yesterday, this morning (QKD)

8. haven't seen / did / return 

DHNB: for ages (HTHT)

9. Have / ever gone / have never been

DHNB: ever, never (HTHT)

10. have / seen

`color{orange}{~MiaMB~}`