if clause

Conditional sentences
If clauses- Type 1,2,3

Ex:
I will buy a house if I have money
(if I have money, I will buy a house )
-Mệnh đề if có thể đứng trước
hoặc sau mệnh đề chính . Nếu mệnh đề if
đặt trước mệnh đề chính thì sau nó có dấu phẩy
-Câu điều kiện gồm có hai phần :
main clause và if clause
Main clause
If clause
If clause Main clause

Loại If clause Main clause Cách dùng & ví dụ
1
2
3
Past simple
V2/ed
(to be →WERE)
Present
conditional
Would V-bare
Could
Giả thiết trái ngược với sự thật
ở hiện tại
If I were rich, I would help
the poor

Past perfect
Had + V 3/ ed
Perfect conditional
Would + have + V3/ed
Could
Giả thiết trái ngược với sự thật
trong qúa khứ
If Van Quyen had not bet on
football,he would not have been
in prison
Present simple
V-bare / V s / es
Simple future
Will+ V bare
Giả thiết có thể xảy ra ở hiện tại
hoặc tương lai
If you study hard, you will pass
the exam

Task 1 : Use the correct verb tenses :
1. If I see him , I (give ) him a gift
2. If I had a typewriter, I (type) it myself
3. If I had known that you were in hospital, I
(visit) you
4. You could make better progress if you
(attend) class regularly
5. If I (know) his telephone number, I’d give it to
you
6. If you (arrive) ten minutes earlier, you would
have got a seat

will give
would type
would have visited
attended
knew
had arrived

Task 2: make conditional sentences
1. Keep silent or you’ll wake the baby up
If
2. Stop talking or you won’t understand the lesson
If
3. I don’t know her number, so I don’t ring her up
If
4. I don’t know the answer, so I can’t tell you
If
5. We got lost because we didn’t have a map
If
you don’t keep silent , you will wake the baby up
you don’t stop talking , you won’t understand the lesson
I knew her number, I would ring her up
I knew the answer, I could tell you
we had had a map, we would not have got lost