I´m sending the reading about "Our fragile planet" taken by the book "English in mind" 2 .Cambridge. Please, read it, practice the oral reading, study the vocabulary and do the exercises.
THE FUTURE WITH WILL/ WON’T THE USE OF MIGHT AND MAY (NOT)
OUR FRAGILE PLANET
Tornadoes, sometimes called “twisters”, are whirlwinds with speeds of up to 400km per hour. In the USA, there are 1,000 tornadoes every year.
They look fascinating and dramatic when we are watching them on TV, but they can kill. In Britain, there were very few tornadoes in the past. Now, there are more than 50 tornadoes a year.
Tornadoes are only one sign of the world’s climate changes. There are many others. The number of thunderstorms is increasing and there are more hurricanes. There are more floods in some parts of the world, and there is much less rain in others. We know that these things happen because global temperatures are rising and many people believe the weather will get worse in the future. The problems of climate change won’t go away unless we do something about the causes.
Scientists still do not know enough about the reasons for these temperature changes. Some say that these types of climate changes are natural, but most scientists think human activity is the problem. Cutting down trees, burning too much oil, and the increase in the number of cars and planes are some of the things that cause the problems.
Scientists believe that if the temperatures continue to rise, the ice of the poles will melt. If the ice melts, sea levels will rise. Some island might disappear completely, and there might be floods in coastal cities. All this means that unless we do something to stop global warming now, there may be many other dramatic changes in the future.
Practice:
Visit the following links and solve the exercises. In the first link you will find 4 exercises, solve all of them.
http://www.english-grammar-lessons.com/maymight/menu.php
http://www.englisch-hilfen.de/en/exercises/tenses/will_future_statements.htm
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