`1.` Viet Nam is a country in Aisa

`=>` S + tobe + V + O.

`2.` hai duong has population of 2 million people

`=>` S + have/has + V + O

`3.` I went swimming with my father last week

`=>` S + V2/ed + O.

`4.` When I was small, I lived with my parents in the countryside

`=>` S +  was/were + V, S + V2/ed + O.

`5.` My sister has to get up early in the morning

`=>` S + have/has + to + V + O.

`6.` My father bought me a new bike last week, the bike is beautiful

`=>` S + V2/ed + O, S + tobe + adj

`7.` We haven't to wear unifrom to work

`=>` S + have/has + (not) + to + V + O.