Chuyên đề câu điều kiện

Replace “IF”Unless trừ khi, nếu không = If …… not Ex: My wife will be very upset if I don’t get back tomorrow.. -> My wife will be very upset unless I get back tomorrow.. Mệnh đề Unles

Put the verbs in the correct form

1 If I made a promise, I (keep) _ it.

2 If we had known your address, we (write)

_ you a letter.

3 If you come here in Spring, you (have) _

a chance to go to the village fair.

4 I (not do) that if I (be) you.

5 You were late last night If you (arrive)

_ ten minutes earlier, you (get)

Simple present in the main clause:

Ex: If you heat ice, it turns to water

Progressive tense:

Ex: If I were sitting on the car, I would feel carsick

Perfect tense: Ex: If I have finished the letter, I’ll post it

Be going to/ have to/…

Ex: If you are going to leave, I won’t say anything

 ‘Should in the conditional clause:’

II Replace “IF”

Unless (trừ khi, nếu không) = If …… not

Ex: My wife will be very upset if I don’t get back tomorrow

-> My wife will be very upset unless I get back tomorrow

Mệnh đề Unless luôn ở thể khẳng định.

 Không dùng thì tương lai trong mệnh đề Unless

 Provided/ Providing that, on condition

that, as long as (miÔn lµ), suppose (gi¶ sö nh­),

only if (chØ víi ®iÒu kiÖn lµ), but for + noun (nÕu kh«ng) …

Ex:

1, I ll do all thing ’ as long as she is happy.

2, Provided that you know her address, will you

help me to give her this book?

II Replace “IF”

 Inversion:

 Chỉ dùng đảo ngữ trong mệnh đề IF

 Không dùng dạng rút gọn trong mệnh đề đảo ngữ phủ định

Ex: Hadn’t he asked me, he’d have asked you Had he not asked me, he’d have asked you

.

II Replace “IF”

Exercise: Rewrite these sentences beginning the

given word:

1 If Tom had understood what I said, he’d have

come back (Had……….)

-> Had Tom understood what I said, he’d have

come back.

2 If he meets Mary, he will call you

(Should………)

-> Should he meet Mary , I will call you.

3 If I had much money, I would buy that village ( Were………….)

-> Were I to have much money , I would buy that

village

III.Mixed condition

Situation: I didn’t eat breakfast this morning, I am

hungry now (If… )

-> If I had eaten breakfast this morning, I would not be

hungry now

(type 3 & type 2)

Situation: He has a test to do today, so he couldn’t go out for picnic with his friends yesterday (If… )

-> If he didn’t have a test to do today, he could have gone out for picnic with his friends yesterday

(type 2 & type 3)

1.If I were a King, you would be a Queen 2.Were I a bird, I would be a dove.

3.If he looks at me, I will be shy.

4.He wouldn’t have failed the exams if he had studied harder.

5.Unless he swears, I won’t believe him.

Study hard/ be given a commendation

eat a lot/

be overweight

nice/ go for picnic

money Know your number/ call

be careful/ fall

President/ build more schools

money/ village

Rain/ pick up

Type 1- Real condition

If + S + is/ am/ are + N/Adj

V(s/ es) + (O) , S +

Ex: If it rains tomorrow, I will stay at home.

(I’ll)

WillCanMay

+ V-inf

Type 2- Unreal condition

+ V-inf

If + S + had + V(ed/ P2) + (O),

S + would + have + V(ed/ P2)+ (O)

Ex: If I had known your address, I would have

visited you.

Type 3 - Unreal condition

Inversion - Form

Type 1

Type 2

Type 3

Ex: If I had money, I would give you all.

Ex: If it rains, I will stay at home with you.

Ex: If I had known your address, I’d have visited you.