`1.` The local people should clean it so that we can use water.

`2.` We shouldn’t waste public transportation and should use it.

`3.` We should save paper so that we don’t have to cut down more trees.

`4.` We shouldn’t use plastic bags and should reuse shopping bags.

`5.` We can save electricity so that we should protect the environment.

`6.` People should take quick showers, and they don’t waste water.

`7.` People should learn how to recycle things so that they can reduce land pollution.

`8.` People should recycle plastic bottles, and they can reuse glass bottles.

`9.` We shouldn’t throw trash into rivers and lakes, and we should help clean up the environment.

`10.` We should turn off air conditioners when we leave a room so that we can save electricity.

`---------`

`-` S + should/shouldn't + V(inf – nguyên thể) + O.

`-` and được dùng để nối hai hay nhiều từ hoặc cụm từ tương đồng với nhau về mặt ngữ pháp, ta thường đặt and trước từ/cụm từ đứng cuối cùng.

`-` S + V + and + S + V + ...

`-` S + be + so + adj + (that) + S + V : Quá .. đến nỗi ...

`-` S + V + O + so that + S + V + O

`1,` The local people should clean it so that we can use water

`2,` We shouldn’t waste public transportation and should use it

`3,` We should save paper so that we don’t have to cut down more trees

`4,` We shouldn’t use plastic bags and should reuse shopping bags

`5,` We can save electricity so that we should protect the environment

- can + V-bare: có thể làm gì

`6,` People should take quick showers, and they don’t waste water

`7,` People should learn how to recycle things so that they can reduce land pollution

`8,` People should recycle plastic bottles, and they can reuse glass bottles

`9,` We shouldn’t throw trash into rivers and lakes, and we should help clean up the environment

`10,`  We should turn off air conditioners when we leave a room so that we can save electricity

`-----`

`->` Đưa ra lời khuyên:

`=>` S + should + V-bare: nên làm gì

`=>` S + shouldn't + V-bare: không nên làm gì