`1`.If we plant more trees , the air will be fresher

`\rightarrow` CĐK Loại 1 : Diễn tả hành động có thật ở Hiện tại

`-` If - clause : Thì HTĐ : S + Vs / es

`-` Main - clause : Thì TLĐ : S + will + V

`2`.New York is the most exciting city in the world

`\rightarrow` So sánh nhất : S + is / am / are + the adj-est / the most adj

`3`.Because cartoons are funny and exciting , most children like watching them

`\rightarrow` Because + C1 + C2 : Mặc dù ( `3 , 6` )

`\rightarrow` Because dùng để chỉ nguyên nhân , lý do ( `3 , 6` )

`4`.Nga's favourite sport is table tennis

`\rightarrow` Thì HTĐ ( ĐT Tobe ) : S + is / am / are + adj / n

`5`.Children should not spend too much time watching television

`\rightarrow` S + should / shouldn't + V : Nên / Không nên làm gì

`6`.Jim likes to watch Animal programme because he loves animals

`7`.Today VTV3 has three interesting films

`\rightarrow` Thì HTĐ : S + Vs / es

`\text{# Kirigiri}`