英语人教版 (2019)Unit 2 Bridging Cultures教学ppt课件

这是一份英语人教版 (2019)Unit 2 Bridging Cultures教学ppt课件，共49页。PPT课件主要包含了Leading-in，主语从句的连接词，如何选择正确的连接词，It 做形式主语，动宾结构，表语从句，S+V+P，link verb，behind， Summary等内容，欢迎下载使用。

Learning aims
名词性从句 nun clause
主语从句subject clause
宾语从句bject clause
表语从句predicative clause
同位语从句appsitive clause
Study the sentences belw and mark the nun clauses. 1. What seemed strange befre nw appears quite nrmal t Xie Lei.2. What surprised Xie Lei was that she fund herself speaking up in class after just a few weeks.3. It’s imprtant that Xie Lei keeps a balance between her studies and her scial life.
Study the sentences belw and mark the nun clauses.1. What seemed strange befre nw appears quite nrmal t Xie Lei. 以前看似奇怪的事情，现在对谢蕾来说很正常。2. What surprised Xie Lei was that she fund herself speaking up in class after just a few weeks. 令谢蕾惊喜的是，仅仅几周的时间，她就能在课堂上大胆发言了。
(subject 主语)
(subject 主语)
( predicative表语)
3. It is imprtant that Xie Lei keeps a balance between her studies and her scial life. 谢蕾在学习和社会生活之间保持平衡是很重要的。
主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前；或由形式主语it代替，而本身放在句子末尾。
That he will win is certain.Whether he’ll jin us in the discussin is f great imprtance.
1. 从属连词：that：只起引导作用，本身无实际意义，不充当任何成分，但不能省略。whether：意为“是否”，不充当从句的任何成分。
Wh will meet him is nt decided.What yu tld me just nw was really a surprise.Which class will win the ftball game is nt clear.Whever breaks the law shuld be punished.Whatever he says is f n imprtance. Whichever f yu cmes first will receive a prize.
2. 连接代词wh, what, which, whever, whatever, whichever引导主语从句，包含意思，并在从句中充当成分。
注： what 与 that在引导主语从句时的区别
1)_______ yu said yesterday is right.2)________ she is still alive is a cnslatin（安慰）. 3)_______ he lst the bike wrried him a lt.4)_______ caused the accident remains unknwn. 5) _______ made matters wrse was_______ night began t fall.6) ________ we can’t get seems better than ______ we have.
WhatThatThat
what 在从句中充当句子成分，如主语、宾语、表语，而that 则不然。
1._______ makes dgs identify patients with cancer is a mystery he succeeded in applying fr the psitin made his family happy.
Where we will hld the basketball game tmrrw is nt imprtant.When she will be back is still a questin.Why he came here is nt knwn.Hw we can prtect the grain frm damp needs t be discussed.
3. 连接副词when, where, why, hw等引导主语从句，包含意思，并在从句中充当成分，不可省略。
1.(_____ is needed fr success) is yur hard wrk.2.(_____can jin in the sprt meet) is decided by the teacher.3.(________ it will rain r nt) is nt clear.4.(_______ the earth is becming warm) is a gd tpic fr research.5.(______ the earth is a slid ball) is knwn t us all.
根据语意缺什么补什么都不缺用that或whether
为了避免句子头重脚轻，通常把形式主语it放在主语位置，从属连词that引导的从句作真正的主语真正主语置于句末。
(1) It＋be＋形容词(bvius，true，natural，surprising，gd，wnderful，funny，pssible，likely，certain，prbable等)＋that从句。It isn't likely that I shuld accept such an ffer as that.我不可能接受像那样的帮助。 
(2)It＋be＋名词词组(n wnder，an hnr，a gd thing，a pity，n surprise等)＋that从句。It's n wnder that he didn't want t g.难怪他不想去。(3)It＋be＋过去分词(said，reprted，thught，expected，decided，annunced，arranged等)＋that从句。It is decided that the meeting has been put ff till next Mnday.会议被推迟到下周一召开已经定下来了
(4)It＋动词/动词短语(seem，appear，happen，matter，turn ut，ccur t，make n difference等)＋that从句。It suddenly ccurred t her that Je was afraid f being alne. 她突然想到乔害怕独自一个人待着。
1.Whether we can have clean drinking water lies in what effective measures will be taken by the gvernment abut water pllutin. 2.It remains t be seen whether r nt this idea can be put int practice. 3.It is nt immediately clear whether/if the financial crisis will sn be ver.
5.whether与if引导主语从句的区别：主语从句位于主句谓语动词前，表示“是否”，只能用 whether而不能用if引导；若用it作形式主语，则if与whether可互换
1.When he will d the experiment has nt been decided we badly need is enugh time t the by wants are sme bks f great benefit.
从句做主语谓语一般用单数 what从句根据它所指代的内容确认谓语单复数。
做宾语的句子：宾语从句
I knw yu.
I knw that yu are brken.
I lve yu fr wh yu are.
I am happy that yu like it!
系表结构常用的形容词包括：happy, pleased, glad, satisfied, sure, certain, afraid, surprised 等。
whether, if
that, which, wh, whm, whse
when, where, hw, why…
或引导词，就是用来连接主语和宾语从句的词；共3类
1) 从句是陈述句： that / 不填
Spider-Man said that he felt a bit dwn.
2) 从句是一般疑问句：whether / if
I dubt whether Spider-Man died.
3) 从句是特殊疑问句：特殊疑问词，如 when, hw, what等
I wnder when the new Spider-Man series will cme ut.
我想知道蜘蛛侠新系列电影什么时候上映。
连接词 + 主语 + 谓语 + ……
When will he g t the library? His brther asks when he will g t the library . His brther asks when will he g t the library .
04 时态：现在对多种，过去对过去
1）主句是一般现在时，从句可以是多种时态
Mm wnders if I have finished my hmewrk.
Mm says that she saw my friend Mary last night.
Mm says that she will lve me frever.
Mm says that she lves me.
2）主句是一般过去时，从句是过去的某种时态
Dad said he had drunk cffee fr ten years.
Dad said that he liked cffee.
Dad said that he was enjying a cup f cffee at that mment.
3）从句是客观事实、真理时，用一般现在时, 不受主句影响：
He said that light travels much faster than sund.
The questin is wh will d it.
The questin is difficult.
在主从复合句充当表语的从句叫表语从句
系动词后的成分为表语。系动词后的从句为表语从句
系动词主要是be动词（am, is, are, was, were)，意为“是”。其它系动词：1)持续系动词（表示主语持续或保持一种状况或态度）：keep, remain, stay, stand2) “像”系动词（表示看起来像）：seem, appear, lk3)感官系动词：lk, feel, smell, sund, taste4)变化系动词（主语变成什么样）：becme, grw, turn, fall, get, g5)终止系动词（主语已终止动作）：prve, turn ut
The questin is hw can I make yu understand the knwledge.
The questin is hw I can make yu understand the knwledge.
Rule 1 : 表语从句和宾语从句、主语从句一样，要用陈述语序：主语+谓语。
Rule 2 : 表语从句的引导词没有if !!!
The questin is if it is wrthwhile t d it.
The questin is whether it is wrthwhile t d it.
只用whether ,不用if的情况Whether t dWhether……r nt介词后的宾语从句从句：句首的主语从句，表语从句，同位语从句
Rule 3 : 表语从句的虚拟语气
My prpsal is that we (shuld) start early tmrrw.I prpse that we (shuld) start early tmrrw.It is prpsed that we (shuld) start early tmrrw.
在表示“建议，劝说，命令”的名词 idea, advice, suggestin, request, prpsal 等后面的表语从句中，谓语动词用“shuld + 动词原形”，shuld可省略
Rule 3 : as if/as thugh 引导的表语从句常跟在lk, seem, sund, feel等后面语气： 若表示真实情况：用陈述语气 若表示非真实情况：用虚拟语气
Dark cluds are gathering. It lks as if it’s ging t rain.It seemed as if the night wuld never end.
Rule 3 : as if/as thugh 引导的表语从句的虚拟语气： 若跟现在事实不符：过去式（be动词用were） 若跟过去事实不符：had dne 若跟将来事实不符：wuld/culd+动词原形
The little by talks as if he knew everything in the wrld.He felt as if he had met this yung lady fr a lng smewhere.
My suggestin is that we __________ (g) t hspital at nce.When a pencil is partly in a glass f water, it lks as if it _______(be) brken.My idea is that we ___________(get) mre peple t attend the cnference.The little girl talked as if she ___________(be) a grwn-up.She lks as if she _________(be) ten years yunger.
Rule 4 : because引导表语从句通常只用于“This/That/It is because…”结构中。
I d s many things fr yu. It is because I lve yu.I am late this mrning. That is because I left my bag n the subway. Yur speech is excellent. This is because yu prepared it a lt.
Rule 5 :当从句描述原因时：主语为reasn 时，引导词用that It, This, That 开头做主语，引导词用because
She was late this mrning. That was because she missed the early bus. The reasn why he was late was that he missed the early bus.
Rule 6 :引导词that, because, why的区别：描述原因用that或because.描述结果用why
The reasn was that yu dn’t trust her. He was sent t the hspital. That’s because he was ill. He was ill. That’s why he was sent t the hspital. 
1.He is careless and irrespnsible. That was _______ he was was fired. That was _________ he is careless and irrespnsible.3. The reasn _______ he was fired was ________ he was careless and irrespnsible.
Predicative 表语
Predicative is used ______ the link verb.
A sentence which is used as predicative is Predicative Clause表语从句.
②感官动词：sund, taste,smell, lk, feel;
③表示变化的词：g,get, turn, becme.
that whether
what（ever） which(ever) wh(ever)Whm(ever) whse
when where hw why whenever wherever hwever
1______ the delayed flight will take ff depends much n the weather .2. It’s uncertain _____ side effect the medicine will bring abut , althugh abut tw thusand patients have taken it .3. _______was mst imprtant t her, she tld me, was her family. 4. ______ Li Bai, a great Chinese pet, was brn is knwn t the public, but sme wn’t accept it.5. It all depends n ________ they will d their best .
6.First f all，_____ we shuld prevent him frm ding it is the mst all thught it is a pity _________the cncert was put ff.8. I didn’t knw what time he _______ the letter. (write)9. Culd yu tell me wh _________ away the bk already? (take)10.Tim tld me he _________ t the Great Wall several times. (be)11.The radi says it _______ cludy tmrrw. (be)
.补全句子1.The fact was 　.事实是他没有做真正的努力。2.The questin is 　　 .问题是这部电影是否值得看。3.Nw she has knwn Millie fr years.现在看起来好像她认识米莉已有好多年了。4.My advice is as ften as pssible.我的建是你尽可能经常地练习说英语。5.That’s .那就是我第一次遇见她的地方。
that he didn’t really try
whether the film is wrth seeing
it seems as thugh/if
that yu (shuld) practise speaking English
where I first met her
6.This is __________I English is limited. This is _______I hate reading English bks. 8.The village is _________ I used t spend my is ___________ I really lve the way he truble is __________ we are shrt f prblem is __________ cat is suitable fr me.12.I’d like t start my wn business—that’s ________ I want t d if I had the I want t knw is _______will supprt me.