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Transcript

If Clause

THE ZERO CONDITIONAL

----------------------- ----------------------------------------- If clause Main Clause

The ground gets wet if it rains.

If it rains, the ground gets wet.

Present Simple if Present Simple

If/When + Present Simple, Present Simple

(We can often use WHEN instead of IF and it has the same meaning.)

If you have a lot of work, how do you organize yourself? When you see a homeless person, what do you do?

If/When + Present Simple, Present Simple

The ground doesn’t get wet if it doesn’t rain.

If it doesn’t rain, the ground doesn’t get wet.

When do we use it? - Scientific facts. To talk about universal truth * If I run 100 km, I get tired * If you heat water to 100º, it boils- To give commands / orders: (NO SUBJECT IN THE MAIN CLAUSE)* If you are tired, go to bed * If you don't understand the lesson, ask the teacherIf clause CONDITION, Main Clause RESULT

If/When + Present Simple, Present Simple

Pay attention: Zero Conditionals are also known as Type 0 conditionals (general truth – general rule)If you leave ice in the sun, it melts.The condition is: if you leave ice in the sun. This is an if-clause because it begins with IF.What is the result of this if-clause?The result is: the ice melts. But to avoid repeating the word ICE, we use the pronoun IT so we say: it melts.

If/When + Present Simple, Present Simple

- We have to use a comma at the end of an if-clauseIf you stand in the rain, you get wet.(The condition is: If you stand in the rain, the result is: you get wet.)- We can also change the order of the sentence and have the main clause (the result) before the if-clause (the condition).How we can we change our example sentence (If you stand in the rain, you get wet) to this order? We say:You get wet if you stand in the rain.Note that with this order, we do NOT use a comma between the clauses.

If/When + Present Simple, Present Simple

THE FIRST CONDITIONAL

I will stay home if it rains.

If it rains, I will stay home.

Future Simple if Present Simple

If + Present Simple, Future Simple

If + Present Simple, Future Simple

I won’t stay home if it doesn’t rain.

If it doesn’t rain, I won’t stay home.

Future Simple if Present Simple

When do we use it? - To possible plans, promises, warnings, threats or for persuading someone. We are predicting a likely result in the future if a condition is fulfilled.*If I feel sick tomorrow, I won't go to school.*She will be late if the train is delayed*If we don't hurry, we will miss the bus

If + Present Simple, Future Simple

Unless is used in negative conditionalExamples:* Unless you fill this form, you won't get your ID card* Unless we recycle more, we won't have a better world

If + Present Simple, Future Simple

We can also reverse the order and use:Future Verb + If + Present SimpleI will be annoyed if they don't arrive on time.You will get a better job if you can speak English.

If + Present Simple, Future Simple

Modal Verbs

Modal Verbs in First Conditional (Modal Verbs: verbos auxiliares utilizados para complementar ou mudar o sentido dos verbos principais nas frases) Normally WILL is used in the main clause of first conditional sentences. However you can also use the modal verbs MAY, MIGHT and COULD when something is a possible consequence (and not a certain one) in the future. If you are nice to me, I may buy you a gift when I'm in Peru. If they train a little harder, they might win the match. If he doesn't do his work, he could get fired.

MODAL VERBS: 1st Conditional

1 The table will break if you ________ (sit) on it. 2 If he ________ (eat) all that, he will be ill. 3 If I find your passport, I ________ (telephone) you. 4 The police ________ (arrest) him, if they catch him. 5 If he________ (read) in bad light, he will ruin his eyes. 6 Someone ________ (steal) your car if you leave it unlocked. 7 What will happen if my parachute________ (not open)? 8 If he ________ (wash) my car, I'll give him $10. 9 If she ________ (need) a radio, she can borrow mine. 10 If you________ (not go) away, I'll call the police. 11 I'll be very angry if he ________ (make) any more mistakes. 12 If he ________ (be) late, we'll go without him.

If my husband _____ (eat) too much French fries, he ___ (get) fat. When I ___ (sell) my motorbike, I ___ (buy) a boat. Unless ice _____(warm) up, it _____(not melt). If I ___ (learn) this lesson, I ____ (pass) my exam. Jacob ____ (pick) you up, if it ____(rain). If John ___ (fail) his English exam, he __ (not go) to the party. When it __(rain), shops ___ (sell) more umbrellas. If Virginia ___ (be) late, George ___(get) hungry. If my team ___(win) the championship, we ___ (celebrate). If I ___(not clean), nobody ___ (do).

The end.

I would have gotten a prize if I had won the contest.

If I had won the contest, I would have gotten a prize.

S + would have + v.3 if Past Perfect

If + Past Perfect, S + would have + v.3

I wouldn’t have gotten a prize if I hadn’t won the contest.

If I hadn’t won the contest, I wouldn’t have gotten a prize.

S + wouldn’t have + v.3 if Past Perfect

If + Past Perfect, S + wouldn’t have + v.3