1. If it were fine, Hoa would go to the beach. 

2. Unless Hoang gets up early, he'll be late for school.

3. Unless Hoang studies hard, he will fail the exam. 

4. Unless you give my bicycle back to me, I'll call the police.

5. Unless Tom changed his way, he would end up in the prison.

6. Unless the weather were bad, we would travel by bike. 

- Cấu trúc câu điều kiện loại I

( + ) If + S + V-s/es (HTD), S + will/may/can/... + V-inf + O

( - ) If + S + don't/doesn't + V-inf (HTD), S + will/can/may/... + not + V-inf + O

- Cấu trúc câu điều kiện loại II

( + ) If + S + V-ed (QKD), S + would/could/... + V-inf + O

( - ) If + S + didn't + V-inf (QKD), S + wouldn't/couldn't/... + V-inf + O

- Unless = If not = Nếu không, Trừ khi 

`-` CĐK Loại `1` : Diễn tả hành động có thật ở Hiện tại

`+` If - clause : Thì HTĐ : S + Vs / es

`+` Main - clause : Thì TLĐ : S + will + V

`-` CĐK Loại `2` : Diễn tả hành động không có thật ở Hiện tại

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

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

`->` Unless `=` If not : Trừ phi

`1`.If it weren't fine , Hoa wouldn't go to the beach

`2`.Unless Hoang gets up early , he'll be late for school

`3`.Unless Hoang studies hard , he will fail the exam

`4`.Unless you give my bicycle back to me , I'll call the police

`5`.Unless Tom changed his way , he would end up in the prison

`6`.Unless the weather were bad , we would travel by bike

`\text{# Eternal}`