Conditionals

(условной) части.
Придаточная часть выражает условие и содержит слова:
If -

если
When - когда
Unless - если не

Главная часть показывает результат соблюдения условия придаточной части.

очевидных причинах и следствиях.
If Present Simple, Present Simple.
If you eat

much, you gain weight.

If = when

Water and oil do not mix if you combine them.
Water and oil do not mix when you combine them.

If you (to heat) ice, it (to melt). 3. If you

(to mix) green and blue, you (not to get) purple. 4. If public transport (to be) efficient, people (to stop) using their cars. 5. If people (to eat) too much, they (to get) fat. 6. People (to die) if they (not to eat). 7. You (to get) water if you (to mix) hydrogen and oxygen. 8. Snakes (to bite) if they (to be) scared 9. If babies (to be) hungry, they (to cry).

или будущему.
If Present Simple, Future Simple.
If I find a good

job, I will be happy.

(keep) polluting the environment. 2. If we dump all sorts of

chemicals into rivers, we _____ (not be able to) swim in them in the future. 3. If we ______ (not stop) cutting down so many trees, we ________ (endanger) our oxygen supply. 4. If the global temperature ________ (rise), sea levels _______ (rise) too. 5. People ________ (run out of) drinking water one day if they _______(not use) it more rationally. 6. If a human __________ (want) to help the planet, then he _____________ (have to) change his habits.

к настоящему или будущему.
If Past Simple, would+verb.
If I had more

money, I would live in a palace.

Note: в условной части глагол to be может иметь форму were для любых подлежащих.
If I were you, I would read this fantasy book.

would say «No». It's pic 7.

Past Perfect, would have +V3.
If I had listened to your

advice, I would have been safe.
But now I am in a hospital.

factory it ______ (not close). 2. If the government _______(build) flood

barriers, we _______(not have) the floods last year. 3. If Dan _______(know) how to swim, he _________ (not drown). 4. If Molly ________(listen) to the weather- forecast, she __________(know) it was going to rain. 5. If Greg _________ (tell) me he was ill, I _________ (be) more sympathetic. . 6. If she ________ (prepare) for the exam, she __________ (pass) it. 7. If Bill _______ (see) the house, he ______ (not buy) it.

go.
Если они пригласят меня на вечеринку, то я

не пойду.

Unless they invite me to the party, I won’t go.
Если они не пригласят меня на вечеринку, то я не пойду.

If you don't do your homework, you will get a bad mark.

Unless you do your homework, you will get a bad mark.

Презентацию подготовила
учитель английского языка
МОУ СОШ №13 г.Павловский Посад
Минакова Виталина Витальевна