Cấu trúc chủ yếu : Thì HTHT :

`-` CKĐ : S + have / has + V3 / PII 

`-` CPĐ : S + haven't / hasn't + V3 / PII

`-` CNV : Have / Has + S + V3 / PII ?

`=>` `DHNB` : for , since , before , ...

`1`.He hasn't gone aboard before

`2`.She has driven for 1 month

`3`.We have eaten since it started to rain

`4`.I haven't had my hair cut since I left her

`5`.She hasn't kissed me for 5 months

`6`.We haven't met for a long time

`7`.How long have you had it ?

`\text{@ TheFox}`

1. He hasn't gone abroad before .

(Cấu trúc: This is the first time S+has/have + V3  --->  S+has/have +never+V3+before)

2. She has driven for 1 month .

( Cấu trúc: S+started/began +V-ing/to_V + at/in/on time hoặc time ago

              ---> S +have/has +V3 + since/for + mốc thời gian)

3. We have eaten since it started to rain .

(Tương tự câu 2 nha )

4. I haven't my hair cut since I left her .

(Last: lần cuối ;  since S+V: Kể từ khi

Cấu trúc: S+ last +Vpast +(o) when S+Vpast -->  S+haven't/hasn't +V3 sice S+Vpast)

5. She hasn't kissed me for 5 months

(Cấu trúc: The last time S+Vpast +time was at/in/on time hoặc time ago

             ---> S + haven't/hasn't+V3 +since+ mốc thời gian

                                                            for+ khoảng thời gian)            

6. We haven't met each other for a long time

(Cấu trúc: It is time sice S+Vpast --->S+have/has +not+V3+ for+ khoảng thời gian

                                                                                                       since+mốc thời gian)        

7. How long have you had it ?

(Cấu trúc: How long have/has +S+ V3 ----> When did S+ Vo ?)