$\text{27.}$ 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.... 
→ S + has/have + Vpp + O 

→ S + last + Ved/cột 2 + O 

→ The last time + S + Ved/cột 2 + was + time
→ S+ has/have + not + Vpp + O 

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