`1`.If we had time , we would go out often

`\rightarrow` CĐK Loại 2 : Diễn tả hành động không có thật ở Hiện tại ( `1 , 3 , 8 , 9` )

`-` If - clause : Thì QKĐ : S + Ved / V2

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

`2`.More public means of transport are being used to protect the environment

`\rightarrow` BĐ `-` Thì HTTD : S + is / am / are + being + V3 / PII ( by O )

`3`.If it didn't rain , we wouldn't cancel the picnic

`4`.They often have the house cleaned by a woman

`\rightarrow` BĐ khổ sai : S + have / has / ... + sth + V3 / PII ( by O )

`5`.The radio was repaired before the typhoon

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

`6`.Because of the bad weather , we didn't finish the work on time

`\rightarrow` Because of + V-ing / N + Clause : Mặc dù

`7`.After he had done the homework , he went out

`\rightarrow` After + S + had + V3 / PII , S + Ved / V2

`8`.If they weren't very old , they could work hard

`9`.If they had time , they would go out

`\text{# Kirigiri}`