Make complete conditional sentences type 1 from the given words. 1. If/ people/ not/ stop/ dumping/ waste/ river/, / pollution/ increase. 2. If/ polar ice caps/ melt/, / huge landmasses/ be/ under / sea. 3. If the air/ city/ be/ polluted, / it/ cause/ people’s respiratory problems. 4. The climate/ change/ if/ more trees/ be/ cut down. 5. If/ we/ not / protect/ frontier/ forests/, / we/ suffer from/ a lot/ natural disasters.

`1.` If people do not stop dumping waste into rivers, pollution will increase

`2,` If the polar ice caps melt, huge landmasses will be underwater

`3,` If the air in the city is polluted, it can cause people's respiratory problems

`4,` The climate will change If more trees are cut down for hardwood

`5,` If we do not protect the frontier forests, we will suffer from many natural disasters

`*` Cấu trúc của câu:

`+` Câu điều kiện loại 1: If + S + V(s/es). S + will/can/shall + V.....

`^` Giải thích thêm:

`-`Câu điều kiện loại 1 thường xảy ra vào thì hiện tại đơn.

`-` Câu điều kiện loại 2 thường xảy ra vào thì quá khứ đơn.

`-` Câu điều kiện loại 3 thường xảy ra vào thì quá khứ HT.

`1.` If people don't stop dumping waste into rivers, pollution will increase. 

`2.` If the polar ice caps melt, huge landmasses will be underwater.

`3.`  If the air in the city is polluted, it can cause people's respiratory problems.

`4.`  The climate will change if more trees are cut down for hardwood.

`5.` If we do not protect the frontier forests, we will suffer from many natural disasters.

`=>` Câu điều kiện loại `1`

`=>` Cấu trúc: If + S + V ( s/es ) + O, S + will/ can/ shall + Vo + O

`=>` Cấu trúc: S + will/ can/ shall + Vo + If + S + V ( s/es ) + O