北师大版（2019）选择性必修第二册Unit 6 The Media Lesson 1 Grammer 1 it 的用法课件（27张PPT））

(共27张PPT)
UNIT 6
THE MEDIA
Lesson 1　From Page to Screen
Grammer 1 it 的用法
语法结构　悟通研透
Activity 1　规律探究
感知以下课文原句，完成方框下的小题
1....it is safe to say that great films may be made from not particularly good books.
2.It allowed the previously unfilmable to become a reality.
3.One may think that it is the book writer who is in the best position to do film adaptations.
4....find it difficult to adapt to a new form.
5.In this situation，it is clear that viewers will not be disappointed!
1.it用作非人称代词时，可以指代前面所说的部分内容或某个东西，如句____。
2.it可以代替主语从句，作形式主语，如句___；也可代替_______作形式主语，如句1。
3.it可以代替_______作形式宾语，如句4。
4.it可以构成强调句型，如句___。
2
不定式
5
不定式
3
Activity 2　语法精析
一、it 作人称代词
1.it的最基本用法是作代词，主要指上文提到的事物，以避免重复：
Xi’an is a beautiful city，isn’t it
西安是个美丽的城市，不是吗？
2.也可以指动物、婴儿(未知性别的婴儿或孩子)或不明身份的人：
—Is this your dog
—No，it isn’t.
——这是你的狗吗？
——不是。
Her newly-born baby is tiny；it only weighs 2 kilos.
她刚生的宝宝个头很小，才两千克重。
—Who is it knocking at the door
—It might be the postman.
——谁在敲门？
——可能是邮递员。
二、it作非人称代词
1.指天气：
It is a lovely day，isn’t it
天气真不错，不是吗？
It is a bit windy.有点风。
2.指时间：
It was nearly midnight when she came back.
她回来时已近午夜。
3.指环境：
It was very quiet in the café.咖啡馆里非常安静。
4.指距离：
It is half an hour’s walk to the city centre from my home.
从我家到市中心有半小时的步行路程。
5.指日期：
—What’s the date today
—It’s May 1,2021.
——今天是几号？
——2021年5月1日。
6.指季节：
It is summer now.现在是夏季。
三、it作形式主语
1.it作形式主语替代动词不定式
(1)It be＋adj.＋(for sb. ) to do sth.
此处的形容词通常为描述事件的形容词：easy，difficult，hard，necessary，unnecessary，possible，impossible，likely，unlikely，right，wrong，important，unimportant，legal，illegal，well-mannered，ill-mannered，polite，impolite，clear，obvious，certain，suitable，proper，fit，useful，useless，dangerous等。
It is illegal (for a teenager) to drive a car without a license.
(青少年)没有驾照开车是违法的。
(2)It be＋adj.＋of sb. to do sth.
此处的形容词通常为描述人的形容词：kind，unkind，nice，rude，cruel，considerate，thoughtful，thoughtless，careful，careless，silly，foolish，stupid，clever，wise，crazy等。
It’s kind of you to help me with the problem.
帮我解决问题，你真是太好了。
2.it作形式主语替代主语从句
(1)It is＋adj.＋从句
It is clear (obvious/true/possible/certain/...) that...
该句型中it是形式主语，真正的主语是that引导的主语从句，常译为“明显(显然/真的……)”。
It is very clear that he’s round and tall like a tree.
很明显他又胖又高像一棵树。
(2)It is＋v.-ed＋that...＝Sb. /Sth. is＋v.-ed＋to do
It is said (reported/learned/believed/thought/known/told/hoped/...) that...
该句型中的it 仍是形式主语，真正的主语是that引导的主语从句；该结构常译为“据说(据报道/据悉……)”。
It is said that he has come to Beijing.
据说他已经来北京了。
It is reported that another earth satellite has been put into orbit.
据报道，另一个地球卫星已发射进轨道。
(3)It is＋n.＋that...
It is a pity (a shame/an honor/a good thing/a fact/a surprise/...) that...
该句型中，如果表示出乎意料等感情，that后的从句一般用虚拟语气，即谓语动词用“should＋动词原形”，should可省去，常译为“竟然”。没有这种意义时，则不用虚拟语气。
It is a pity that such a thing (should) happen in your class.
这种事竟然发生在你们班上，真是遗憾！
It is a pity that he is ill.他生病了，真遗憾！
四、it作形式宾语
当复合宾语中的宾语是不定式、动名词或宾语从句时，往往把宾语放在它的补足语后面，而用it 作形式宾语，放在宾语补足语之前。常用的动词有think，believe，make，find，consider，feel等。
I found it very interesting to study English.
我发现学英语非常有趣。
He made it clear that he was not interested in this subject.
他非常清楚地表示他对这门学科不感兴趣。
五、it构成的强调句型
1.肯定句
It is (was)＋被强调部分＋that (who)＋其他部分.
It was in Beijing that I saw the film Wolf Warriors Ⅱ.
我是在北京看了电影《战狼Ⅱ》。
2.否定句
It is (was) not＋被强调部分＋that (who)＋其他部分.
It is (was) not until...＋that＋其他部分.
It was not until twelve o’clock last night that he went to bed.
＝He didn’t go to bed until twelve o’clock last night.
昨晚直到12点他才去睡觉。
It was not until I got off the bus that I realized it.
＝I didn’t realize it until I got off the bus.
直到下车我才意识到这一点。
3.疑问句
(1)强调句的一般疑问句只需把is/was提前，即：Is(Was) it＋被强调部分＋that(who)＋其他部分？
Was it you who/that broke the window
是你把窗户打破了吗？
(2)强调句的特殊疑问句，只需在一般疑问句前加上特殊疑问词即可，即：特殊疑问词＋is (was) it＋that＋其他部分？
Who was it that broke the window
打破窗户的是谁？
When was it that you called me yesterday
你昨天是什么时候打电话给我的？
[特别提示]
(1)不论强调句子的哪一部分，都可用that连接句子的其余部分。
(2)被强调部分指人时，可用who取代that。
(3)it之后的be动词的时态通常要与that之后的谓语保持一致。
[疑难辨析]
一、it替代作主语的动名词或不定式的常见句型
It’s no good/use/pleasure doing...
It’s (well) worth doing...
It’s worthwhile doing/to do...
二、it常用的固定搭配
1.make it
(1)在口语当中相当于succeed，表示“获得成功，做到，赶上，及时到达”。
He never really made it as an actor.
他从来就不是一个成功的演员。
(2)在口语中相当于fix the date for，表示“约定好时间”。
—Shall we meet next week
—OK.We just make it next Saturday.
——我们下星期见面好吗？
——好。那我们约定好下星期六吧。
2.take it/things easy相当于don’t worry或don’t hurry，用来劝告别人，表示“不要慌，别担心，沉住气”。
Take it easy！He will do it well.
别担心！他会做好的。
3.it all depends/that all depends 在口语中，相当于it hasn’t been decided yet，表示“视情况而定”。
—Are you going to the countryside for holiday
—It/That all depends.
——你要去乡村度假吗？
——那得看情况。
4.it’s up to sb. 在口语中，相当于it’s decided by sb. 表示“由……决定，由……负责，取决于……”。
—Shall we go out for dinner
—It’s up to you.
——我们出去吃晚饭吗？
——你决定吧。
返 回
达标检测
Ⅰ.单句语法填空
1.She gave him a hug gently，which was ________ his expectation.
2.The television __________(adapt) of the stage play was very successful.
3.The teacher insists that you shouldn’t leave ____ any detail while retelling the text.
4.The young girl __________(cast) down when she heard their critical words.
beyond
adaptation
out
was cast
5.The mother as well as her three daughters _____(like) the functions of the new mobile phone.
6.The majority of workers find ___ quite hard to live on the amount of money they earn.
7.___ is astonishing that the man，who was badly off a few years ago，is so rich now.
8.It was no pleasure _________(watch) the football match at home alone，so I went to the bar.
likes
it
It
watching
Thank you for listening!