if they didn't dump waste into this lake, it wouldn't be polluted - câu điều kiện loại hai 

the picture was painted (by them) - bị động thì quá khứ đơn, picture số ít chia was

we hate living in flooded areas.

hate=dislike=ghét

cả hai + Ving

`2`.If they didn't waste into this lake , it wouldn't be polluted

`\rightarrow` Cấu trúc Câu điều kiện loại 2 :

If - clause : Thì QKĐ : S + Ved / V2

Main - clause : Thì TLTQK : S + would + V

`3`.The picture was painted by them

`\rightarrow` Câu bị động - Thì QKĐ : S + was / were + V3 / PII ( by O )

`4`.We hate to live in flooded areas

`\rightarrow` Hate + V-ing [ or to V ]

`\text{@ TheFox}`