Conditionals:
Zero conditional:(true / scientific facts)
We use the Zero Conditional to describe rules and situations that are always true, where one event always follows the other in these sentences.
The pattern:
If + Present simple Present Simple
EX : If you expose water to 100° C , it boils.
First Conditional : (future)
The first conditional is used to speak about something that will certainly happen (in the future) on the basis of the condition.
EX : If you keep your desk tidy, you will get better marks.
The pattern :
If + Present Future simple
Second Conditional: (unreal / improbable)
The second conditional expresses an improbable or imaginary situation in the future and its consequence.
the pattern :
If + Simple past Would + infinitive
EX: If I won the lottery, I would buy a new car.
If I were you, I would accept the offer.
Third Conditional: (Past)
The Third Conditional is used to talk about conditions in the past.
The pattern :
If + Past perfect Would + have + past participle.
EX: If his parents had been well off, he would have gone to university.
( His parents were not well off and he didn't go to the university )
Practice:
Complete the sentences with the correct form of the verbs in brackets. Use the Zero or the First Conditional.
If I .....................(feel) sad, I usually ............................ (phone) my friends.
Plants .................... (die) if they ....................... (not have) enough light.
If I ......................... (see) that film tomorrow, I ................... (tell) you what it's like.
I .................... (phone) you tonight if I ....................... (not go) out with Bill.
I always .................... (go) swommong on Friday afternoons if I ..........(have) time.
If I ............ (have) a party next month, I .................... (invite) all the students in my class.
Correct the mistakes in the Zero and First Conditional sentences. Rewrite the sentences correctly.
If you will have a computer at home, you can play this game.
.......................................................................................
I will ask Jim to dance if I will see him at the disco.
......................................................................................
I always spend a lot of money if I will go shopping with my sister.
.....................................................................................
If will heat ice, it turns to water.
.....................................................................................
If the weather is good tomorrow, I go walking in the mountains.
....................................................................................
If you will like watching sports on television, you should try the new sports channel.
....................................................................................
First or Second Conditional?
I live in Scotland. If I .................. (live) in France, I .....................(learn) French.
If I ................(be) you, I ............................(not go) to the party. I really don't think it's a good idea.
I usually see John in the afternoon. I ......................(give) him your message if I .............(see) him later.
Don't worry.I ......................(help) you with your chemistry homework if you ............. (not understand) it. I'm good at chemistry.
I ................. (buy) a new computer if I ................. (have) enough money. Unfortunately I've only got £50!
I'm saving up at the moment. If I ...............(have) enough money at the end of the year, I.........................(buy) a CD player
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