Chapter3: Conditionnal sentences Type 1,2
A. THEORY
I.Câu điều kiện loại 1(có thể xảy ra ở hiện tại & tương lai):
If Clause(mệnh đề If )
Main Clause( m.đề chính )

(HTĐ am/is/are
V1/Vs-es
(don’t/doesn’t-V1)
(Chủ ngữ : He,She,It + Vs,es)
(will/can/may +V1

Ex : I will stay at home if it rains
If you leavebefore 10 o’clock, you will catch the train easily
*Dạng bài tập : V(inf)… + OR + Clause (Simple Future)
= Unless you + V(inf)… , Clause (Simple Future)
= If you don’t + V(inf)… , Clause (Simple Future)
Ví dụ: Study hard or you will fail the exam.
= Unless you study hard , you will fail the exam.
= If you don’t study hard , you will fail the exam.

II.Câu điều kiện loại 2: là câu điều kiện không có thật thường dùng để nói lên sự tưởng tượng của người nói. ( Điều kiện không thể xảy ra ở hiện tại hoặc tương lai ).
Cấu trúc :

If Clause(mệnh đề If )
Main Clause( m.đề chính )

(QKBT were/ weren’t
V2/V-ed
(didn’t+V1)
Would/Could/Might + V1

Ex:If I lived near your house, I would take you to school everyday
Note: -Động từtobe phải chia là wereởtấtcảcác ngôi.
Ex: - If I wereyou,I wouldn`t gotothatmovie.
- Chúng ta có thể sử dụng Could hoặc might thay thế cho wouldở mệnh đề chính
Ex:If I won the lottery, I could / might stop working
- Chúng ta không sử dụng would / might / could trong mệnh đề chứa If.
*Note:
- Muốn chuyển từ câu nói thường sang câu điều kiện thì:
+ Động từ trong mệnh đề if (if clause) lùi 1 bậc thì.
+ Câu khẳng định -> câu phủ định và ngược lại.
Ex: I do not have money . I do not buy a new car.
-> If I had money, I would buy a new car.
- Câu bắt đầu bằng “because” -> If clause
Ex: He does not get good marks because he is lazy.
->If he were lazy, he would get good marks.
- Câu bắt đầu bằng “so” , mệnh đề đứng trước “so” là mệnh đề If.
Ex: I do not care about my mother’s advice, so I have so many problems in my business.
->If I cared about my mother’s advice, I would not have so many problems in my business.
B.EXERCISE
EXERCISE 1:Conditional Sentence Type II :
If I ………….….a lot of money now, I …………..a new car.
A. have /will buy B. have / would buy C. had/ will buy D. had/ would buy.
If I ……………you, I …………………….do that.
A. am/ will B. were /would C. were / will D. had been/ would.
If I were offered the job, I think I ………………………….…. it.
A. take B. will take C. would take D. would have taken.
I would be very surprised if he…………………….…………..
A. refuses B. refused C. had refused D. would refuse.
Many people would be out of work if that factory………..down.
A. closes B. had closed C. closed D. would close.
If she sold her car, she ……………………..… much money.
A. gets B. would get C. will get D. would have got.
They would be disappointed if we………………………………….
A. hadn’t come B. wouldn’t come C. don’t come D. didn’t come.
Would John be angry if I ……………..…. ……his bicycle without asking?
A. take B. took C. had taken D. would take.
She ………………….….terribly upset if I lost this ring.
A. will be B. would be C. were D. had been.
If someone…………in here with a gun, I would be very frightened.
A. would walk B. walks C. had walked D. walked.
What would happen if you ……………..to work tomorrow?
A. don’t go B.