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1. 2012/6/23 1 Conditional Sentences
2. 2012/6/23 Conditional Sentences 2 Types of Conditional Sentences Type 0: To express universal truth
Type 1: To express present or future activities which are true or likely
Type 2: To express present or future activities which are impossible or unlikely to happen
Type 3: To deal with past situations
3. 2012/6/23 Conditional Sentences 3 Type 0: To express universal truth Form: Present tense, Present tense
*** The conjunction IF can be replaced by WHEN
e.g. a. If we ice under the sun, it melts quickly.
b. When we ice under the sun, it quickly.
4. 2012/6/23 Conditional Sentences 4 Type 1: To express present or future activities which are true or likely
Form: Present tense, Present future tense (can / may)
e.g. If it rains tomorrow, we will not go on a picnic.
If it should rain tomorrow, we will not go on a picnic.
OR Should it rain tomorrow, we will not go on a picnic.
5. 2012/6/23 Conditional Sentences 5 Type 2: To express present or future activities which are impossible or unlikely to happen
Form: Past tense, Past future tense
*** Use WERE for all persons
e.g. a. If it rained tomorrow, we would not go on a picnic.
b. If Peter were here, we would win.
OR Were Peter here, we would win.
6. 2012/6/23 Conditional Sentences 6 Type 3: To deal with past situations. The action mentioned did not actually happen.
Form: Past perfect tense, Past future perfect tense
*** The word IF can be omitted but the subject and the verb should exchange position.
e.g. If it had rained yesterday, we would not have gone on a picnic.
OR Had it rained yesterday, we would not have gone on a picnic.
7. 2012/6/23 Conditional Sentences 7 If I a pair of wings,I to the places I like most.
8. 2012/6/23 Conditional Sentences 8
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11. 2012/6/23 Conditional Sentences 11
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13. 2012/6/23 Conditional Sentences 13
14. 2012/6/23 Conditional Sentences 14 Communication Game If you could change your age, what age would you rather be?
If you could live any place in the world, where would it be?
If you could take only three people with you on a trip around the world, whom would you take?
15. 2012/6/23 Conditional Sentences 15 Exercise General situations
Who do you go to see if you are sick?
What do people bring if it rains?
What does your teacher do if you are late for school?
How do you feel if you do not sleep very well?
How do you feel if someone is rude to you?
16. 2012/6/23 Conditional Sentences 16 B. Present Conditional
What may happen if the bus driver does not slow down?
What will they do if it continues to rain?
Where will people be sent to if they break the law?
If Steven misses the last train home, where can he stay?
If Eddie is naughty, what will he not get from his parents?
What will happen to the ship if it goes out in the typhoon?
17. 2012/6/23 Conditional Sentences 17 Past Conditional
If Terry took more exercise, what would happen to him?
If Betty ate less sweets, what would happen to her?
If Dora had your address, what would she send you?
What would happen if Mary did not study for the test?
What would happen if Dick missed the bus?
What would happen if the factory closed down?
What would you do if you had a lot of money?
If tomorrow were your birthday, what would you buy?
18. 2012/6/23 Conditional Sentences 18 D. Perfect Conditional
What would have happened if it had rained yesterday?
What would have happened if Shirley had been to the party?
What would have happened if Anna had been late to the office?
What would have happened if Diana had missed the train?
What would have happened if Susan had not been careful?