外研版（2019） 选择性必修第二册 Unit 5 A delicate World Using language 课件-15张

(共15张PPT)
it as an empty object
Using language
No visitor would think it surprising that the island
is a UNESCO World Heritage Site
d. Experts felt it necessary to come up with a plan to remove all the rabbits from the island.
Analyze the structure of the sentences
83%
58%
No visitor would think it surprising that the island
is a UNESCO World Heritage Site
d. Experts felt it necessary to come up with a plan to remove all the rabbits from the island.
Analyze the structure of the sentences
What does “it” refer to in sentence(a) and sentence (c)
宾语从句
不定式
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No visitor would think it surprising that the island is a UNESCO World Heritage Site
No visitor would think that the island being a UNESCO World Heritage Site is surprising.
c. Experts felt it necessary to come up with a plan to remove all the rabbits from the island.
d. Experts felt to come up with a plan to remove all the rabbits from the island was necessary
宾语从句
宾语从句
It作形式宾语
条件
真正的宾语是
有宾语补足语
不定式
动名词
从句
具备了这两个条件， 形式宾语it一定要用。
It 指代不定式
think/find/consider/feel/make/regard it + 形容词/名词+ to do sth
I find it pleasant to work with him.
All these noises made it impossible for me to go on the work.
They felt it my honor to be invited to speak here.
She considers it her duty to take care of us.
It 指代动名词
动词+ it no good/no use/useless doing sth
The professor considers it no good reading without understanding
Do you consider it any good trying again
He found it useless(no use) arguing with him.
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It 指代从句
动词+ it+ 形容词/名词+从句
We all thought it a pity that the performance had been delayed
You should make it clear whether you want it or not.
They found it pleasant that they worked with us Chinese.
动词+ it +介词短语+从句
We owe it to you that there wasn’t a serious accident.
I took it for granted that they were not coming.
It 指代从句
appreciate/hate/like/love+ it +if/when+从句
I hate it when my mother asks me to eat eggs.
I would appreciate it if you could consider my application
动词+it+过去分词+从句
He made it known to everyone that he was right.
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Let’s practice
1. I consider it no use ___________(talk) with him about it .
2. I don`t think _______ possible to master a foreign language without much memory work.
3. I would appreciate _______ if you would like to teach me how to use the computer.
4. The Internet makes it possible _________(share ) the latest news.
5. I think _______ my duty to help her.
talking
it
it
to share
it
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Let’s practice
6. We all thought it a pity __________ the conference should have been cancelled.
7. They took ________ for granted that I would be no good at it .
that
it
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Translate the following sentences
1. Children feel it safe and happy to be with their parents.
2. I find it hard to get along with her.
3. Modern technology has made it possible to fly in space.
4. The heavy rain made it more difficult for us to finish the work on time.
5. We thought it no use explaining to him what happened.
many people think it a good idea to keep this turtle as a pet
believe it no big issue to release them into the wild
Rewrite the underlined parts using it as an empty object.
3. people have found it a threat to other species to release these turtles into the wild
4. Experts consider it important for owners to keep their pets in an enclosed area
Rewrite the underlined parts using it as an empty object.
Look at the pictures of the Saihanba National Forest Park and describe its changes using it as an empty object where appropriate.
1960s
present day
I think it a breakthrough to transform a desert into a forest…
nouns/adjectives
breakthrough
impossible
likely
unrealistic
…
to do /that
grow
investigate
plant trees
transform
…