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Act. Three (p.66)
Plants must be protected. /m.sbi¸/
They can’t be replaced by man-made converters . /k.¸mb./ 45
They shouldn’t be cut down. /©ªmbi¸/
Act. Four
Brainstorm the topic with your students before they describe the process in question.
YOUR TURN (p.67)
Act. One (p.67)
Make sure your students pronounce the modals in the correct way.
a. We mustn’t hunt animals in danger of extinction.
Animals in danger of extinction mustn’t be hunted.
b. We shouldn’t throw recyclable objects.
Recylable objects shouldn’t be thrown away.
c. We should stop desertification.
Desertification should be stopped.
d. We can divide pollution into four types.
Pollution can be divided into four types.
e. We may group alternative energies in five categories: wind, solar, biomass and hydro-electric .
Alternative energies may be grouped in five categories: ...
f. We must protect our human resources.
Human resources must be protected.
TIP BOX (p.67)
Go through the tip box before you move on to the activity in the Write it up rubric.
WRITE IT UP (p.68)
Interact with the students using the picture. The students will identify the different parts of the solar home and their functions. Explain the difficult vocabulary if necessary.
Ladies and gentlemen....
During winter, ouside air is captured by warm glass roof panels. Then,
warm air is forced down into a water tank by an air handling unit.
Next, the water in the tank is heated and greater quantities of warm water
air are released. The hot air is then sent down a duct to the crawlspace in
under-floor area. After that, warm water rises through floor registers to the