Conditionals презентация

Conditionals

Все типы условных предложений состоят из двух частей: 1) главной части; 2)придаточной (условной) части. Придаточная часть выражает условие и содержит слова: If - если When - когда Unless - если не

Zero Conditional употребляется, если речь идет о научных фактах, прописных истинах, очевидных причинах и следствиях.

1. The grass (to get) wet when it (to rain). 2. 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).

Conditional I обозначает реальные, осуществимые ситуации, которые могут относиться к настоящему или будущему.

1. Many wildlife habitats will be destroyed if man ______ (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.

Conditional II охватывает маловероятные, воображаемые ситуации, относящиеся к настоящему или будущему.

Conditional III описывает невыполненные условия в прошлом, ситуацию, которую нельзя изменить.

1. If the government ______ (give) more money to the 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.

IF&UNLESS