1. Water these plants or they will die. If you dont... 2. Im not rich, so I cant buy that house. If I were. 3. He works in the evening, so he has no time to play with his children. If he didnt. 4. Hurry up or well be late for the concert. If we dont. 5. The test is so difficult that we cant finish it on time. If the test werent. 6. We cant buy this car because it is very expensive. If the car were.. 7. I dont know his address, so I cant write to him. If I knew...... 8. Study harder or you wont pass the exam. You wont 9. Change his way of living or hell meet a lot of troubles. Unless he.. 10. This shirt is too small for me to wear. If this shirt

$Đáp$ $án$ + $giải$ $thích$:

`1`. `I`f you don't water theses plants, they will die

`2`. `I`f I were rich, I could buy that house.

`3`. `I`f he didn't work in the evening, he could have more time to play with his children.

`4`. `I`f we don't hurry up, we will be late for the concert.

`5`. `I`f the test weren't difficult, we could finish it on time.

`6`. `I`f the car weren't expensive, we could buy this car.

`7`. `I`f I knew his address, I could write to him.

`8`. `Y`ou won't pass the exam if you don't study harder.

`9`. `U`nless he changes his way of living, he will meet a lot of troubles.

`10`.`I`f this shirt weren't small, I could wear it.

`----------------`

`@` `C`ấu trúc câu điều kiện:

`-` `U`nless `=` `I`f not: Nếu không..

`-` `L`oại `1`: 

$\text{If + S + V-s,es / (am,is,are), S + will/can/may/shall (not) + V(bare)}$

$\text{If + S + do/does + not + V(bare), S + will/can/may/shall (not) + V(bare)}$

`-` `L`oại `2`:

$\text{If + S + V2/ed / (WERE), S + would/could/might (not) + V(bare)}$

$\text{If + S + didn't + V(bare), S + would/could/might (not) + V(bare)}$