`1.` They began building this house 2 months ago.
`⇒`They have built this house for 2 months.

`Grammar:` S + began/started + V-ing + time ago
`⇒` S + have/has + P2 + for + time

`2.` My father started working in this factory last week.
`⇒` My father has worked in this factory since last week.

`Grammar:` S + started + V-ing + mốc thời gian ( in 2022,last year ,...)
`⇒` S + have/has + V3/P2 + since + mốc thời gian

`3.` He started living in Ho Chi Minh City when he was 8.
`⇒` He has lived in Ho Chi Minh City since he was 8.

`Grammar:` S + started + V-ing + when + S + was/were + tuổi (12,45,..)
`⇒` S + have/has + V3/P2 + since + S + was/were + tuổi

`4.` He started learning English 8 years ago.
`⇒` He has been learning English for 8 years.

`Grammar:` S + started + V-ing + time ago
`⇒` S + have/has + V3/P2 + for + time

`5.` They have worked in that factory for five years.
`⇒` They began working in that factory five years ago.

`Grammar:` S + have/has + V3/P2 + for + time
`⇒` S + began/started + V-ing + time ago

`6.` We have learnt English for four years.
`⇒` We started learning English four years ago.

`Grammar:` S + have/has + V3/P2 + for + time
`⇒` S + started + V-ing + time ago

`7.` My father started giving up smoking last year.
`⇒` My father has given up smoking since last year.

`Grammar:` S + started + V-ing + mốc thời gian
vS + have/has + V3/P2 + since + mốc thời gian

`8.` She started driving 1 month ago.
`⇒` She has been driving for 1 month.

`Grammar:` S + started + V-ing + time ago
vS + have/has + V3/P2 + for + time

`9.` We began eating when it started to rain.
`⇒` We have eaten since it started to rain.

`Grammar:` S + began/started + V-ing + when + S + V (qk đơn)
`⇒` S + have/has + V3/P2 + since + mệnh đề (qk đơn )

`10.` Samuel started keeping a diary in 1997.
`⇒` Samuel has kept a diary since 1997.

`Grammar:` S + started + V-ing + in + năm 
`⇒` S + have/has + V3/P2 + since + năm 

 Lưu ý : Phân biệt since và for

For : Khoảng thời gian (mang tính kéo dài)

Since : Mốc thời gian (bắt đầu từ khi nào)