Unit 4
Lessons 2-3-4
Student’s Book pages 33-34-35
GRAMMAR
State and dynamic verbs
● Dynamic verbs, such as walk, talk, do, go, eat, drink, shop, run and watch, describe actions and activities.
They can be used in both the Present Simple and the Present Continuous depending on the context.
● State verbs, such as be, like, love, hate, know, think, believe, remember, forget, need, want, see, hear and feel, describe states, opinions and feelings, and they usually appear in the Present Simple. This is because they are used to describe fairly permanent, rather than transient, states.
● Some verbs can be both state and dynamic. They would have one meaning when they are state and another meaning when they are dynamic.
2 Listen to an interview with a scientist. Which area of science does he believe is the most important today?
Audioscript
Interviewer: Professor Allen. Can you tell us what scientists do?
Professor: Scientists study the world around us-from the tint micro-organisms that live on Earth to distant unknown planets.
Interviewer: Which area of science do you think is the most important one today?
Professor: I’m an environmental scientist, so of course I think that environmental science is the most important! Today, there are a lot of environmental problems in the world, and scientists are trying to solve them. At the moment, I am working with some tiny green plants, which don’t produce flowers when they grow. They live in rivers and in the sea and they grow in sunlight. We are carrying out experiments to grow huge numbers of these tiny plants in water. They are very important, because when they grow, they react to sunlight and produce a liquid. We think that cars can use this liquid in the future.
Interviewer: I see now why so many people think that science is very exciting.
READING
SB page 35
The text talks about:
- The brilliant scientist Ibn Al Haitham.
- His book “the Book of Optics”.
- His experiments that he carried out to explain how human beings see.
-His success in proving his hypotheses.
- The difference between Ibn Al Haitham and Ancient Greek scholars.