高中英语外研版 (2019)选择性必修 第二册Unit 5 A delicate world一等奖课件ppt

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A delicate world
Unit 5　
Period Four　Grammar—It as an empty object
达标检测 当堂检测 基础达标演练
语法导学 感悟规律 重点难点剖析
内容索引
感知以下课文原句，完成方框下的小题
1.No visitor would think it surprising that the island is a UNESCO World Heritage Site.2.This incident made it clear that the rat，mouse and rabbit problem needed solving once and for all.3.Experts felt it necessary to come up with a plan to remove all the rabbits from the island.4.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.
语法感知
语 法 导 学
感悟规律 重点难点剖析
5.I do not consider it worthwhile spending too much time on telephone conversation.6.She found it troublesome having to go through all the red tape.7.You may rely on it that he will come in time.8.I don’t like it when you shout at me.
1.以上句子中，句1和句2中it充当形式宾语，真正的宾语是 ；句3和句4中为it充当形式宾语，代替 ；句5和句6中的it代替 。2.句7中介词后不接 引导的宾语从句，需要用it作形式宾语。3.句8说明某些动词后不直接跟 ，需要先用it作形式宾语，再接从句。
that从句
动词不定式
动名词短语
that
宾语从句
it常可代替不定式(短语)、动名词(短语)或从句在句子中作形式宾语，而将真正的宾语放在句子后面，it作形式宾语常用于以下几种情况：1.动词＋it＋形容词/名词＋(for/of sb. )＋to do/从句They considered it important to have the work done on time.他们认为按时完成这项工作很重要。We make it a rule to visit the old every weekend.我们规定每个周末都去拜访那些老人们。注意：此结构常用的谓语动词有：think，feel，find，make，consider等。
语法精析
2.动词＋it＋no good/no use/useless/a waste of time/worthwhile等＋doing...I’ll make it worthwhile telling me about his secret.告诉我他的秘密，我会酬谢你的。He thought it no use trying to convince them.他认为企图说服他们没有用。3.动词＋it＋介词短语＋that...owe it to sb. that...把……归功于……take it for granted that...想当然/认为……是理所当然的He owes it to his classmate’s help that he has made great progress in English.他把在英语方面取得的很大进步归功于同学们的帮助。
I just took it for granted that our parents looked after us before I went to university.在上大学之前，我认为父母对我们的照顾是理所当然的。4.动词appreciate/hate/love/like/dislike后面接if 或when引导的从句作宾语时，中间需用形式宾语it，构成“appreciate/hate/love/like/dislike＋it＋if/when从句”。He will appreciate it if they will invite him.如果他们邀请他，他将非常感激。She hates it when he bragged that he was the most important.她讨厌他自吹自己最重要。
5.在一些“动词＋介词”构成的短语，如：depend on，rely on，see to 后常先接it，再接that 引导的从句。You don’t depend on it that he will keep his promise that he will come back.你别指望他会遵守他回来的诺言。Would you see to it that she gets home early?你负责保证她早到家，好吗？
返 回
Ⅰ.单句语法填空1.I think necessary for us to learn English well.2.We thought it no use (do) that at that time.3.I hate it the weather becomes freezing cold because there is no heater inside.4.Are you driving to the airport，sir? I’d appreciate if you could give me a lift.5.I used to feel it a terrible thing my mother should have to do the housework endlessly.6.People in the west make it a rule (buy) Christmas presents for their relatives and friends.
达 标 检 测
当堂检测 基础达标演练
it
doing
when
it
that
to buy
Ⅱ.完成句子7.I don’t like .我不喜欢他那么懒惰。8.I consider that he can’t swim.我很遗憾，他不会游泳。9.I find Tom.我觉得与汤姆相处很容易。10.I find taking no measures.我发现不采取措施在这儿等是没有用的。11.I you could give me some advice on how to learn English well.如果你能就如何学好英语给我提一些建议，我会感激不尽的。
返 回
it that he’s so lazy
it a pity
it easy enough to get on/along with
it no use waiting here
would appreciate it if