a) Wind power is clean…………..it’s expensive to buy wind turbines. c) Hydropower is cheap………….it’s clean. d) Nuclear power is cheap to use………it’s very expensive to build a power plant. e) [r]
(1)Grade
THEME 8: ENERGY Lesson
I. New words
+ advantage (n): + choose (chose / chosen) (v): + dangerous (a): + disadvantage (n): + eco-friendly (a): + expensive (a): + power plant (n): + run out (v): + solar panel (n): + sunlight (n): + turbine (n):
II. Grammar
In this lesson, we use compound sentences:
With conjunction but to express contrasting ideas in one sentence EX: Solar power is clean but it’s expensive to buy solar equipment Nuclear power is clean but it can be dangerous
With conjunction and to link two similar ideas in one sentence EX: Nuclear power is cheap to use and it’s clean
III Exercise
1 Fill in the blank with ‘but’ or ‘and’
a) Wind power is clean………… it’s expensive to buy wind turbines b) Wind power is eco – friendly………….it needs to be in a windy place c) Hydropower is cheap………….it’s clean
d) Nuclear power is cheap to use………it’s very expensive to build a power plant e) Solar power is clean………it’s expensive to buy solar panels
f) Oil causes a lot of pollution………it’s non – renewable so one day it will run out g) Wind power is clean………it’s eco – friendly
2 Unscramble the sentences
a) clean / Nuclear / is / cheap / to / use / power / and / it’s
b) but / expensive / solar panels / Solar power / is / it’s / to buy / clean
c) clean / but / it’s / build / to / expensive / Hydropower / is / a power plant
d) natural / job / gas / doesn’t / cause / much / and / it / lots / of / pollution / creates
e) eco – friendly / expensive / wind turbines / Wind power / but / is / it’s / to buy
f) creates / a lot of / pollution / Oil / causes / but / it / jobs / a lot of