`nacutihe.vt`

`1.` He has worked as a bank clerk for 3 months.

`2.` They have lived in Ha Noi for 2 years.

`3.` My father has given up smoking for 3 months.

`4.` Nam has driven the taxi since last month.

`5.` My mother began teaching/to teach Math 6 years ago.

`6.` Sarah started living/to live in Paris in 1995.

`7.` He has studied English since he was small.

`8.` They have had dinner since it was raining.

`9.` Trùng câu 5

`10.` Trùng câu 6

`11.` She has lived in Ha Noi for 2 years.

`12.` Trùng câu 7

`13.` How long have you had this car ?

`-` Trong câu gốc có ''bought'' => have/has had chứ không dùng have/has bought.

`14.` How long ago did he leave you family ?

`15.` How long has she known the truth ?

`- - - - - - - - -`

`***` S + began/started + to V_inf/V_ing + khoảng thời gian + ago

`⇔` S + have/has + Vpp + for + khoảng thời gian

`***` S + began/started + to V_inf/V_ing + in tháng/ năm

       S + began/started + to V_inf/V_ing + when + mệnh đề ở QK

                                              ..... : Bắt đầu làm gì khi nào 

 `⇔` S + have/has + Vpp + since + mốc thời gian (tháng, năm ..) / S + V_QKĐ (was/V_2/ed) .. : Đã làm gì được bao lâu 

`***` When did + S + V_inf .. ? : Làm gì khi nào ?

`⇔` How long + have/has + Vpp .. ? : Đã làm gì được bao lâu ?

`***` How long is it + since + S + V_2/ed .. ? : Đã được bao lâu kể từ khi ..

`⇔` How long ago + did + S + V_inf .. ? : Đã làm gì cách đây bao lâu ..