`27.`James has driven for 40 minutes.

`28.`He has live in Switzerland since 1998.

`29.`John began working in a bank 6 years ago.

`30.`We haven't gotten in a touch with him for 5 days.

`31.`I haven't reach a newspaper since June 2.

`32.`It's two months since I last saw Lan.

`33.`Mary hasn't spoken French for years.

`->`It's years since Mary last spoke French.

`34.`Mai has studied Chinese since 1999.

`35.`I haven't visited my sister since last winter.

* Giải thích :

`*`S + began/started + Ving/to V + time ( thời gian trong quá khứ )

`=`S + have/has + Vpp + since/for + time

`*`The last time + S + V2/ed + was + time

`=`S + last + V2/ed + time

`=`S + have/has not + Vpp + since/for + time

`=`It's + time + since + S (last) + V2/ed

$\text{27.}$ Jame has driven for 40 minutes. 
$\text{28.}$ He has lived in Switzerland since 1998 . 

$\text{29.}$ John began working/to in a bank 6 years ago.

$\text{30.}$ We haven't gotten in a touch with him for 5 days.

$\text{31.}$ I haven't read a newspaper since June 2.
$\text{32.}$ It's two months since I last saw Lan. 

$\text{33.}$ Mary hasn't spoken French for years . 

→ It's years since Mary last spoke French . 

$\text{34.}$ Mai has studied Chinese since 1999 . 

$\text{35.}$ I haven't visited my sister since last winter . 

→ S + started/began + to V/V-ing + when/in/on/ago.... 

→ The last time + S + Ved/cột 2 + was + time

→ S + last + Ved/cột 2 + O 

→ It's +  time + since + S + last + Ved/cột 2 + O 

→ S + has/have + Vpp + O 

→ S+ has/have + not + Vpp + O 

$#Keisha$