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(共17张PPT)
UNIT 5　A delicate world
(单元主题语境：人与自然——自然环境与动植物保护)
Section Ⅱ　Using language
it作形式宾语
[观察]
1．Experts felt it necessary to come up with a plan to remove all the rabbits from the island.
2．This intervention is a long，much-delayed ending to a sad story，but we humans owe it to the island to give it a happy ending.
3．Do you think it any good trying again
4．This incident made it clear that the rat，mouse and rabbit problem needed solving once and for all.
5．No visitor would think it surprising that the island is a UNESCO World Heritage Site.
6．I hate it when my mother asks me to eat eggs.
7．I would prefer it if you didn't tell anyone.
8．You may rely on it that he'll come to meet you.
[探究]
1．以上各句中，因宾语较长，为保持句子的平衡，用it作____________，而把_______________后移。
2．句1、句3、句4和句5真正的宾语分别为__________________、_______________、____________、____________。
形式宾语
真正的宾语
动词不定式短语
动词-ing形式
宾语从句
宾语从句
3．句6、7、8为固定用法，句中动词(短语)不直接跟宾语从句，而是借助__作形式宾语，真正的宾语为________________引导的从句。
4．句2中为双宾语结构，因____________太长而后移，用it作形式宾语，间接宾语前加介词to。
it
when/if/that
直接宾语
一、it作形式宾语的基本用法
当动词不定式、动词-ing形式、从句等结构用作宾语且其后有补语时，为保持句子结构的平衡，通常会在补语前使用it作形式宾语，而将真正的宾语后移。其基本结构为“动词＋it＋补语(形容词/名词)＋不定式/动词-ing形式/从句”。
[感知]
1．I don't think it a good idea to randomly pair up students for the spoken English training class.
我认为把学生随机配对参加英语口语培训班不是一个好主意。
2．The professor considers it no good reading without understanding.
这位教授认为读书而不求甚解没有益处。
3．We all thought it a pity that the conference should have been canceled.
会议取消了，我们都感到很遗憾。
[探究]
句中使用了“动词＋it＋宾语补足语＋真正的宾语”结构，其中it为形式宾语，分别代替_________短语、_________短语和______从句。
不定式
动词-ing
宾语
[即练]
单句填空/完成句子
1．I was so surprised that I felt it hard __________(believe).
2．I find it no use __________(persuade) her to change her mind.
3．We all consider __ worthwhile to argue with them about this matter.
4．我认为尽可能多地记住有用的句型是很重要的。
____________________ that I should remember as many useful sentence patterns as I can.
to believe
persuading
it
I think it important
二、几个特殊的使用形式宾语的句型
[感知]
1．Legacy has it that the egg can be set upright on the first day of the Beginning of Spring.
相传鸡蛋可以在立春的第一天竖立起来。
2．I would appreciate it if you could offer me the chance to be a volunteer.
如果您能给我一个做志愿者的机会，我将不胜感激。
3．Meanwhile participants must see to it that every clip is no longer than 3 minutes.
同时，参与者必须确保每个片段不超过3分钟。
4．We may take it for granted that our mothers do all delicious food for us.
我们可能认为母亲为我们做一切美味的食物是理所当然的。
[归纳]
1．动词＋it＋that从句
常见的用于此结构的动词有have、take、put等。
2．动词＋it＋when/if从句
常见的用于此结构的动词有enjoy、hate、love、like、dislike、appreciate、prefer等。
3．动词＋介词＋it＋that从句
常见的用于此结构的动词短语有see to、look to、insist on、stick to、depend on、answer for等。
4．动词＋it＋介词短语＋that从句
常见的用于此结构的动词短语有take it for granted、bring it to sb's attention、owe it to sb.等。
[即练]
完成句子
1．多亏了你，才没有发生严重事故。
We ______________ that there wasn't a serious accident.
2．我们学校没有安全问题，这点家长可以放心。
Parents can ___________________ there is no security problem in our school.
owed it to you
rely/depend on it that
3．我讨厌她在工作时打电话给我——我总是太忙而不能和她交谈。
I _________________________ at work—I'm always too busy to carry on a conversation with her.
4．汤姆想当然地认为昨天没有作业。
Tom ______________________________________________ yesterday.
hate it when she calls me
took it for granted that there was no homework
根据汉语提示完成短文
With the pollution becoming worse，1.______________________(我认为是我们的责任) take measures to protect the environment at once.But some 2.________________________(认为理所当然) the resources are endless，which causes great harm to nature.Luckily，most of the people 3.________ _________(感到很紧急) protect the environment and save resources. Therefore，our government should 4.____________(务必) effective measures should be taken to prevent pollution.Also，as a senior student，I appeal to all of us to join to protect the environment. 5._____________________(我将不胜感激) if you can do your part.
I think it our duty to
take it for granted that
feel it
urgent to
see to it that
I would appreciate it

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