if clause- soan ky

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... Loại If clause Main clause Cách dùng & ví dụ 1 2 3 Past simple

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

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

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

6 His friends were so late, so they missed the train

If

7 Today isn’t Sunday, so the pupils cant go swimming

If

8 It is very cold , so we can’t go swimming

If

9 It was very cold yesterday, so we couldn’t go

swimming

If

10 I didn’t watch TV last night because I was busy

If

his friends had not been so late, they would not

have missed the train

today were Sunday, the pupils could go swimming

It were not (very) cold, we could go swimming

It had not been (very) cold yesterday, we could

have gone swimming

I had not been busy , I would have watched TV

Cách đặt điều kiện trái ngược tình

huống cho trước:

1 Chọn câu chỉ nguyên nhân ,

2 Đặt giả thiết trái ngược với nguyên nhân

đó ,

3 Chọn loại điều kiện thích hợp:

- Động từ (trong câu tình huống) ở mệnh

lệnh → điều kiện loại 1

- Động từ ở hiện tại → điều kiện 2

- Động từ ở quá khứ → điều kiện 3

Cách dùng UNLESS:

EX:

If you do not study hard, you will fail the

exam

Unless you study hard , you will fail the exam

UNLESS + S + VERB

(Nếu ….không)

Practice: Use UNLESS instead of IF

1 If you do not like this one, I’ll bring you

another

Unless

2 If she does not hurry, she’ll be late

Unless

3 If you are not careful, you’ll cut yourself

Unless

4 if you had not sneezed, he wouldn’t have

known that we were there

you like this one, i’ll bring you another she hurries, she’ll be late

you are careful, you’ll cut yourself

QUIZ 1

1 Because you don’t leave immediately, I call a

policeman

If

2 Go right now or you’ll be late for the train

If

3 His friends were so late, so they missed the

train

If

you left immediately , I wouldn’t call a policeman

his friends had not been late,

they would not have missed the train

you don’t go right now, you will be late for

the train