Most ethnic people live in the stilt houses

-Where...

He went to work by car yesterday

-How...

My mothe enjoys cooking meals

-My mother likes...

Lan runs more quickhy than Hoa

+Hoa...

Most ethnic people live in the stilt houses

-> Where do most ethnic people live ?

He went to work by car yesterday

-> How did he go to work yesterday ?

My mother enjoys cooking meals
-> My mother likes cooking meals (Có thể đề là My mother is thì + fond of cooking meals)

Lan runs more quickhy than Hoa 

-> Hoa runs more slowly than Lan