北师大版（2019）必修第一册Unit 3 Celebrations 单元知识点课件(共18张PPT)

(共18张PPT)
Unit 3 Celebrations
单元语法知识
It is believed that...人们相信……
It is believed that when Fu is put upside down, happiness arrives.人们相信,当“福”被倒过来
放时,幸福就会到来。 (教材P52)
结构1
用法归纳
　　①It is believed that...=sb./sth. be believed　　　　　　　　 ...人们相信……
　　②It在此处作形式主语,真正的主语是后面的that从句(主语从句)。
to do/to have done
结构拓展
　　适用于此句型的动词还有report、expect、say、think、hope、consider、estimate等。
　 It is said that about 20% of 25-34-year-olds live with their parents, compared with 16%
in 1991.据说大约20%的25—34岁的人和父母住在一起,与之相比,1991年这一比例是16%。

Unit 3 Celebrations
语法知识精讲
the moment... 一……就……
　　Every year,the moment I get on the train, I am surrounded by Shanxi accents...每年一上火
车,我就会被山西口音包围……
结构2
情景导学
The moment/As soon as Mary found her pen was missing, she got annoyed.玛丽一发现她的钢
笔不见了,就生气了。
用法归纳
　　名词短语the moment可以用作连词,引导时间状语从句,意为“一……就……”,相当于
　　　　　 。
as soon as
结构拓展
　　“the+时间名词(短语)”如the instant/the second/the minute(一……就……)、the year/
month(那年/那月)、the first time(第一次)等,以及名词短语each time/every time(每次)等,可
起连词的作用,引导时间状语从句。
　 His younger brother was accepted by Harvard University the year he was admitted to
Peking University.他被北京大学录取的那一年,他的弟弟被哈佛大学录取了。
　 Every time I see the hat, it reminds me of the tour I made years before.每次我看到那顶
帽子,它就会让我想起我几年前的那次旅游。
用法归纳
　　①强调句型的结构为“It is/was+被强调部分+　　 +句子剩余部分.”。被强调部分
可以是　　 、　　 、　　 ,但一般不可以是谓语、表语、补足语等。
　　②当被强调部分是人时,可用　　 或　　 ,其余用that。
　　③强调句的时态根据原句的时态确定:若原句为过去的某种时态,则强调句中的be用
　 ;若原句为现在的某种时态,则强调句中的be用　　 。
　　④当强调主语时,that/who后的谓语动词在人称和数上应与　　 　 保持一致。
　　⑤强调句的一般疑问句式:　　　　　　　　 +被强调部分+　　 +句子剩余部分
强调句的特殊疑问句式:　　　 　　 +is/was it that+句子剩余部分
　　⑥对not...until...的强调:It is/was　 　 ...+that+句子剩余部分.
that/who
主语
宾语
状语
who
that
was
is
被强调的主语
Is/Was it
that/who
特殊疑问句
not until
It is/was...that/who...强调句型
　　
结构3
被动语态
　　英语的语态分为主动语态和被动语态两种。主动语态表示主语是谓语动词所表示的
动作的执行者;被动语态表示主语是谓语动词所表示的动作的承受者。
一、不同时态的被动语态
情景导学
　　He is loved by all his students.
　　When will the work be finished
　　We can’t use the reading room. It is being repaired.
　　He knew he would be punished for his parking offence.
　　I had a feeling that I was being watched.
　　Researchers were brought in from all over China to develop the vaccine(疫苗).
　　When we got to the cinema, all the tickets had been sold out.
　　Some sports that were part of the Olympics in the past have been removed.
　　By next year all the money will have been spent.
用法归纳
　　被动语态是由“助动词be+及物动词的过去分词”构成的,即be done。不同时态的被
动语态是在不同时态的主动语态的基础上变换be的形式。常见时态的被动语态形式如下:
现在时 过去时 将来时 过去将来时
一般 am/is/are done was/were done will/shall be done would be done
进行 ①　　　 　 was/were being done
完成 have/has been done ②　　　 　 will have been done would have been done
am/is/are being done
had been done
二、被动语态的各种句式
　　I was invited to the concert yesterday by the Greens.
　　The glass was not broken by Leach but by the wind.
Is King Lear written by Shakespeare
When was the football team set up
　　There will be a report today that smoking might be banned in most buildings.
Must the homework be handed in by tomorrow
　　Anne couldn’t be expected to understand the situation.
用法归纳
(1)肯定句式: 主语+be+过去分词(+...).
(2)否定句式: 主语+be+not+过去分词(+...).
(3)一般疑问句式: ③　　　　　　　　　　 (+...)
(4)特殊疑问句式: 特殊疑问词(不作主语)+be+主语+过去分词(+...)
特殊疑问词(作主语)+be+过去分词(+...)
(5)谓语部分含有情态动词的被动语态形式为“情态动词+be done”, 否定式是在情态动词
后加not,疑问式是将④　 　 提到主语前。
(6)有很多动词短语的用法相当于及物动词,可以有被动语态,要注意变为被动语态时,短语
中的副词或介词不可漏掉。
三、被动语态的用法
Be+主语+过去分词
情态动词
用法归纳
　　一般主动语态与被动语态的选用应根据具体情况而定,但下面几种情况一般用被动语
态:
(1)强调动作的⑤　　 ,或不想说出是谁做的这件事时;
(2)不必指出或不知道动作的执行者时;
(3)动作的执行者显而易见时;
(4)在书面语中,特别是在科技报告、新闻报道、公告和通知中。
四、应注意的问题
1.不能用于被动语态的动词及动词短语
承受者
动词短语
情景导学1
　　This sentence doesn’t make sense—there’s no verb in it.
　　We need more time to see how things develop before we take action.
用法归纳1
　　“动词+名词”形式的动词短语:这类动词短语由“实施动作的动词+表示动作意义的
名词”构成。
情景导学2
　　Could you slow down a bit I can’t keep pace with you.
　　It’s hoped that the talks may bring an end to the violence.
用法归纳2
　　“动词+名词(短语)+介词”形式的动词短语:这类动词短语相当于⑥　　　　　　 ,
需要接宾语,大多数可以用于被动语态。
及物动词
情景导学3
　　In order to look after her sick mother, she asked for a month s leave.
用法归纳3
　　“动词+介词”形式的动词短语:动词加at、for、from、into、of、to、with等介词构成
动介型动词短语,相当于⑦　　　　　　　 , 其后需有宾语,可用于被动语态。宾语只能
放在⑧　　 , 不能放在动词与介词之间。在变为被动语态时, 整个动词短语要作为整体
看待, 不可拆开,介词不能省略。
及物动词
介词后
情景导学4
　　We dressed him up as a gorilla.
　　They let me have bigger imagination space to think over life/think life over.
用法归纳4
　　“及物动词+副词”形式的动词短语:及物动词加ahead、down、aside、back、off、
in、out、forward、on、over、up等副词构成动副型动词短语,相当于⑨　　　　　 ,需带
宾语,可用于被动语态。如果宾语是名词,宾语既可以放在动词和副词之间也可以放在副词
之后;如果宾语是代词,则宾语只能放在⑩　　　 　　 。
及物动词
动词和副词之间
情景导学5
　　We’ve decided not to go away after all.
　　The rain stopped and the sun came out.
用法归纳5
　　“不及物动词+副词”形式的动词短语:不及物动词加away、in、back、off、out、
on、down、over、through、up等副词,相当于 　　　　　 , 这种结构的动词短语不能
用于被动语态, 也不能接宾语。
不及物动词
情景导学6
　　By studying hard I caught up with the others in the class.
　　Many small victories add up to a big one.
用法归纳6
　　“动词+副词+介词”形式的动词短语:这类动词短语相当于 　　　　 , 需要接宾语。
及物动词
即时巩固
1.Jones got the idea after he had talked with an elderly lady who　　 　 　 (cheat) of her money.
2.First of all, uniforms help the school look smart. The students feel that they　　
　 (belong) to a particular group.
3.The flowers　　　　 (water) by the volunteers twice a week.
4.The poem reads nicely and　　　 　 (read)by my students now.
5.The boy felt upset because he　　 　　 (punish) by his teacher at school.
6.Already this year, 115 measles(麻疹) cases　　 　　 (report) in the USA, compared with 189 for all of last year.
had been cheated
belong
are watered
is being read
was punished
have been reported
7.The students have been working hard on their lessons and their efforts　　　 　 (reward)
with success in the end.
8.After school we went to the reading room to do some reading, only to be told that it　　 　
(decorate).
Ⅱ.选词填空
depend on;pass...down; break out; look
forward to; pay attention to; take care
1.My parents and I are　　　 　　 your visit to China.
2.Whether or not we can start off tomorrow will 　　　　　 the weather.
3.The roads are very slippery so 　　　　　 when you drive home.
4.Yan’an’s biggest attraction is the spirit that has been　　　 　　 by generations.
will be rewarded
was being decorated
looking forward to
depend on
take care
passed down
5.The war　　　　　 , and many innocent people were at the risk of losing their lives.
6.When communicating with others, you should 　 　　　　 your attitude in order to avoid
making others feel uncomfortable.
broke out
pay attention to