岳阳市六中乐燕课件.ppt

Unit 13
We are trying to save the earth!
Section A Grammar Focus-4c
岳阳市六中乐燕
take part in
afford
turn off
reusable
pay for
take action
transportation
参加
v. 买的起；承担的起（后果）
关掉
adj. 可重复使用的
付费；付出代价
采取行动
n. 运输业；交通运输
Words Review
We’re trying to save the earth.
Present progressive
The river used to be so clean.
used to
The air is badly polluted.
Passive voice
No scientific studies have shown that shark fins are good for health.
Present perferct
We should help save the sharks.
Model verbs
Grammar Focus
Joe: _____you ever _____ (take) part in an
environmental project?
Ken: Yes, I have. I _____ (help) with a Clean-Up
Day last year. It was___________(consider)
the biggest clean-up project this city ever
________(have).
Fill in the blanks with the correct forms of the verbs in brackets.
4a
Have taken
helped
considered
had had
Joe: How many people ______ (take) part?
Ken: I _____ (think) more than 1,000 people
_____(come) to help out.
Joe: That’s fantastic! I guess everyone in this city
is _____ (try) to improve the environment.
Ken: Yes, we can't afford to _____ (wait) any longer to take action!
took
think
came
trying
wait
Fill in the blanks with the appropriate modal verbs from the box.
People _____ think that big things _____ be done to save the earth. Many forget that saving the earth begins with small things. For example, you _____ save electricity by turning off the lights when you leave a room. You _____ also use reusable bags instead of plastic bags.
4b
can would could have to should must may/might
may
must
could
could
I think it’s a great idea that you now _______ pay
for plastic bags in some stores. And instead of
driving to school or work, you _____ ride your
bike or walk. If it’s far, you take the bus. All these
small things ______ add up and become good
things that ________ improv