`1`. Lan has lived in Da Lat for 4 years.

CT: S + began/ started + to V/ V-ing + [thời gian] ago

↔ S + have/has + V3/-ed hoăc been + V-ing + since/for …

`2`. My son has been studying English since he was young.

CT: S + began/ started + to V/ V-ing + [thời gian] ago

↔ S + have/has + V3/-ed hoăc been + V-ing + since/for …

`3`. This is the first time I have eaten this kind of food.

CT: This is the first time + S + have/has + P2

`4`. This is the first time Lan has seen such a beautiful girl.

CT: This is the first time + S + have/has + P2

`5`. She has never read such a good book before.

CT: This is the best+ N+ S+ have/has+ ever+ P2

↔ S+ have/has+ never+ P2+ such + a/an+ good+ N+ before

`6`. It is the first time Cuong has gone to China.

CT: It/this/S + is/was + the first time + (that) + S + have/has + V2 (PP)

`7`. My sister has been learning English for 2 years.

CT: S + began/ started + to V/ V-ing + [thời gian] ago

↔ S + have/has + V3/-ed hoăc been + V-ing + since/for …

`8`. My parents have been drinking since it started to rain.

CT: S + began/ started + to V/ V-ing + [thời gian] ago

↔ S + have/has + V3/-ed hoăc been + V-ing + since/for

`9`. My brother hasn't had his car repaired since I left him.

CT: S + haven't/hasn't + $V_{ed/3}$ + O + since + S + $V_{ed/2}$ 

`10`. How long has he had it?

CT:How long + have/has + S + Ved/3?

`11`. It has been 6 months since I last saw my grandmother.

CT: It has been + time + since + S + $V_{ed/2}$ 

`12`. It is Monday since I last took a bath 

CT: S + hasn't / haven't +  $V_{ed/3}$  + since + time

↔ It's + time + since + S + last +  $V_{ed/2}$  + O