`\star` (Áp dụng cho câu `1`)

`-` S + started + to V/V-ing + ... + (time) + ago 

`->` S + have/has + V3/ed + .... + for + (khoảng thời gian)

`----`

`\star` (Áp dụng cho câu `2,4,9`)

`-` S + have/has + not + V3/ed + for (khoảng thời gian) 

`->` It's + (khoảng thời gian) + since + S + last + V2/ed

`----`

`\star` (Áp dụng cho câu `3,6`)

`-` S + V2/ed + ... + (time) + ago

`->` S + have/has + V3/ed + ... + for + (khoảng thời gian)

`----`

`\star` (Áp dụng cho câu `5`)

`-` It's + (khoảng thời gian) + since + S + last + V2/ed

`->` S + have/has + not + V3/ed + for (khoảng thời gian)

`----`

`\star` (Áp dụng cho câu `7`)

`-` How long is it + S + since + (mốc thời gian) + ... ?

`->` When did + S + last + V2/ed + ... ?

`----`

`\star` (Áp dụng cho câu `8`)

`-` S + have/has + not + V3/ed + ... + since + (mốc thời gian) +...

`->` S + last + V2/ed + ... + since + (mốc thời gian) + ...

`----`

`\star` (Áp dụng cho câu `10`)

`-` When did + S + start + to V/V-ing + ... ?

`->` How long is it + S + since + (mốc thời gian) + ... ?

`--------------`

`1.` We have written to each other for eight years.

`2.` It's a month since my father last smoked cigarettes.

`3.` Mr Brown has bought this car for five years.

`4.` It's years since I last enjoyed myself.

`5.` We haven't gone to the cinema for a long time.

`6.` He hasn't had his eyes tested for ten months.

`7.` When did he last write to you?

`8.` She last had a swim when she graduated from the university.

`9.` It's ten years since Robert and Catherine have married.

`10.` How long have they learnt Spanish?

`----------`

`\star` (Áp dụng cho câu `1`)

`-` S + have/has + never + V3/ed

`->` This is the first time + S + have/has + V3/ed

`----`

`\star` (Áp dụng cho câu `2`)

`-` S + so sánh nhất + that + S + have/has + ever + V3/ed

`->` S + have/has + never + V3/ed + ...

`----`

`\star` (Áp dụng cho câu `3,4`)

`-` So sánh nhất (Tính từ dài)

`+` S + be + the most + adj + ...

`----`

`\star` (Áp dụng cho câu `5`)

`-` This is + so sánh nhất + S + have/has + ever + V3/ed

`->` S + have/has + never + V3/ed + ... + before.

`------------`

`1.` This is the first time I have ever read such a romantic story like this. 

`2.` I have never seen such a beautiful building like this before.

`3.` Mrs. Jones is the most dangerous person you will ever meet.

`4.` Computer is the most efficient servants man has ever had.

`5.` I've never watch a good film like this before.

`---------------`

$\color{green}{\text{#NhatHuyThichChoiLiqi}}$

$\color{orange}{\text{Chúc bạn học tốt ạ :33}}$

Các công thức đổi HTHT - QKĐ

Structure 1: 

S + has/have + not + V3/ed + for/since + time 

--> S + last + V2/ed 

--> The last time + S+ V2/ed + was + time 

--> It is / has been + time + since + S+ (last) + V2/ed 

Structure 2: 

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

--> When + did + S + V1?

--> How long is it + since + S+ V2/ed ?

Structure 3:

S + has/have + V3/ed + for/since + time 

--> S + started / began + to V / Ving 

--> It is / has been + time + since + S+ V2/ed 

Structure 4: 

S + has/have + not/never + V3/ed + ... before

--> This/It is the first time + S+ has/have+ V3/ed

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

EX B:

1. We have written to each other for eight years.

2. It's a month since my father last smoked cigarettes.

3. Mr. Brown has bought this car for five years.

4. It's years since I last enjoyed myself.

5. We haven't gone to the cinema for a long time.

6. He hasn't had his eyes tested for ten months.

7. When did he last write to you?

8. She last had a swim when she graduated from university.

9. It's ten years since Robert and Catherine got married.

10. How long have they learnt Spanish?

EX C:

1. This is the first time I have ever read such a romantic story like this.

2. I have never seen such a beautiful building like this before.

3. Mrs. Johnes is the most dangerous person you have ever met.

4. Computer is the most efficient servants man has ever had.

5. I've never seen such a good film like this in my life before.

`color{orange}{~LeAiFuRuiHuiBao~}`