`-` 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`.Unless you leave me alone , I'll call the police

`2`.If you didn't drink too much coffee , you could sleep

`3`.If the road weren't narrow , I could drive fast

`4`.If you make me some coffee , I'll give you some sweets

`5`.If she hurried , she could catch the bus

`6`.If you do the shopping , you won't cook lunch

`7`.If I were you , I would start without you

`8`.If you don't practise speaking English everyday , you could improve your English

`9`.If I had enough money , I could buy that book

`\text{# TF}`

1- Ill call the police if you dont leave me alone. -> Unless you leave me alone ,i will call the police (unless= if....not:mệnh đề if ở thể phủ định thì ta có thể thay if=unless và chuyển mệnh đề sang khẳng định) 

2-. You drink too much coffee, thats why you cant sleep -> If you didn't drink too much coffee ,,you could sleep ( ĐK loại 2 : điều kiện không có thật ở hiện tại )

3. Because the road is narrow, I cannot drive fast. -> If the road doesn't narrow, I will drive fasst(ĐK loại 1)

4- Make me some coffee, and Ill give you some sweets. -> If you make me some coffee ,I will give you some sweets ( ĐK loại 1: điều kiện có thật )

5. She doesnt hurry, so she cannot catch the bus. ->If she hurry ,she will catch the bus (ĐK loại 1 )

6- Do the shopping or youll cook lunch. -> If you the shopping , you won't cook lunch(ĐK loại 1)

7- I might be late. If so, start without me. -> If I'm late ,start without me 

8- Practise speaking English every day or you cant improve your English. ->If you don't practise speaking English every day,you can't improve your Enghlish (ĐK loại 1)

9. I dont have enough money. I cant buy that book. -> If I have enough money , I will buy that book (ĐK loại 1 )