`1` If factories dump waste into rivers, a lot of fish will die.

`2` If people keep using plastic bags, oceans are full of plastic garbage.

`3` They won't save a lot of money if they go to work by taxi.

`4` Land for farming will decrease if people build too many houses.

`5` If the Earth becomes hotter, the polar ice cap will melt.

`6` You will waste your paper if you don't write on both sides.

`-----`

`***` Câu điều kiện loại `1`:

`->` If + S + V(HTĐ), S + will/can/may + V

`=>` Có thật ở hiện tại, tương lai.

`1.` If factories dump waste into rivers, a lot of fish will die

`2.` If people keep using plastic bags, oceans will be full of plastic garbage

`3.` They won't have a lot of money if they go to work by taxi

`4.` Land for farming will decrease if people build too many houses

`5.` If The polar ice cap melts, the Earth will become hotter

`6.` You will waste your paper if you don't write on both sides

`______________________`

`***` Câu điều kiện loại 1:

If + S + V(s/es) + O, S + will/can/... + V_inf + O

`->` Dùng để dự đoán hành động, sự việc có thể xảy ra trong tương lai khi đã có một điều kiện nhất định xảy ra trước