外研版 (2019)选择性必修 第四册Unit 5 Into the unknown课文内容ppt课件

这是一份外研版 (2019)选择性必修 第四册Unit 5 Into the unknown课文内容ppt课件，共49页。PPT课件主要包含了Grammar，名词性从句，主语从句，宾语从句，表语从句，同位语从句，名词性从句要点，考点归纳，how，whetherif等内容，欢迎下载使用。
Lk at the sentences frm the reading passage and answer the questins.
1 Which sentence cntains a clause that serves as the subject f the sentence?2 Which sentence cntains a clause that serves as the bject f the sentence?3 Which sentence cntains a clause that gives further infrmatin abut the subject in the sentence? 4 What d “hw” , “what” and “why” in each sentence refer t?
In sentence a, “hw” refers t the extent f pwer f Ancient Maya civilizatin’s secrets.
In sentence c, “why” refers t the reasn that Maya civilizatin cllapsed.
In sentence b, “what” refers t the thing that caused the Maya t abandn mst f their great cities.
Nw lk fr mre sentences with nun clauses in the reading passage.
Review: nun clause 名词性从句
一个句子放于主语的位置上
一个句子放于宾语的位置上
一个句子放于表语的位置上
一个句子放于同位语的位置上
What’s past is prlgue.
Tmrrw r an accident-yu never knw which will cme first.
That it will never cme again is what makes life s sweet.
I have a dream that ne day little black bys and girls will be hlding hands with little white bys and girls.
I dn’t knw what yu’re talking abut.
That I miss yu is bvius.
D yu knw why yu’re learning English?
从句成分： *不缺任何成分?连接词 *缺主宾表?连接代词 *缺状语意义?连接副词
that从句位于句首时, that不能省略。 That thery must g hand in hand with practice is a principle we shuld always keep in mind. 有时可用形式主语it代替主语从句, 将it放在句首, 主语从句放在句末, 以避免句子头重脚轻。It is nt knwn yet where she has gne.
当宾语从句后有宾语补足语时, 需要用it作形式宾语, 而将宾语从句后置。I made it clear that we were determined t carry ut the plan.当主句主语是第一人称，且谓语为think, believe, suppse, expect等动词时, 如果宾语从句表示否定意思, 通常否定前移, 即否定主句的谓语。I dn’t think there’s a cmputer stre in the twn.I dn’t believe that she’s ever been t Hng Kng.宾语从句也可用作介词或形容词的宾语。She was never satisfied with what she had achieved.
引导宾语从句的连词that在口语中可省略, 但在下列情况中，that需保留。主、从句之间有表示时间等的状语时that不能省略, 否则会产生歧义。The gegraphy teacher tld us yesterday that the nearest neighbur f the earth is the mn.主、从句之间有插入语时不可省去that。—It’s thirty years since we last met.—But I still remember, believe it r nt, that we gt lst n a rainy night.引导两个或两个以上的宾语从句时, 第二个以及第二个以后的宾语从句中的连词that不能省略。Frm what is written here I can see yu had a very bad cld three years ag and that yu als had a small peratin last year.
当主语是reasn且后面的表语从句表示原因时通常用that引导; 而当it, this或that作主语, 后面的表语从句常用because或why引导。My reasn is that the cst will be t high. I had t catch the first train. That / This / It was why I left s early. 表语从句还可由as if/as thugh引导。as if/as thugh引导表语从句时, 主句中的动词可用be, seem, appear, lk, taste, sund, feel等。She lks as if / as thugh she had seen a ghst.This meat tastes as if / as thugh it has already gne bad.
同位语从句通常由that引导, 但whether, wh, where等有时也可引导同位语从句。Tears filled her eyes at the thught that she might never see him.I have n idea whether I shuld buy a car r nt.可接同位语从句的通常是一些表示抽象意义的名词, 常见的有news, idea, fact, belief, message, cnclusin, decisin, dubt, hpe, chance, thught等。The fact that the agreement was signed was imprtant.同位语从句有时不直接跟在它所解释说明的名词后面, 而是被其它成分隔开。 The questin came up at the meeting whether we had enugh mney fr ur research.
引导名词性从句的连接词辨析
what与thatwhat引导名词性从句时不仅起连接作用，而在从句中充当主语、宾语、表语、定语等。What makes the schl prud is that mre than 90% f its students have been admitted t key universities.He has fully lived up t what he prmised.I want t knw what the difficulty is nw.Jack cllected what infrmatin he culd find.that引导名词性从句时只起连接作用, 在从句中不作任何成分。
whether与ifwhether引导的主语从句可位于句首或句尾, 而if不能引导位于句首的主语从句。Whether it rains r nt desn’t cncern me.It’s still uncertain if / whether he’s cming r nt.whether可引导表语从句和同位语从句, if 则不能。The questin is whether it is wrth ding.We ught t discuss the questin whether we shuld d it.whether可引导介词后的宾语从句, if则不能。He was wrried abut whether he passed the English examinatin.whether后可直接跟r nt, if 则不能。I really dn’t care whether r nt he will stay.
whever与whmever在正式语体中, whmever是whever的宾格形式; 在非正式语体中, 人们用whever来代替whmever。Whmever yu invite will be welcme.Give it t whever / whmever yu like.whatever与whichever与whatever相比，whichever常有明确的选择范围。It is generally cnsidered unwise t give a child whatever he r she wants.All the bks are here. Yu may brrw whichever yu like.
名词性从句考查要点主要是连接代词和副词的正确使用，主语、谓语的语序，双重连接词以及特殊句型的使用等。其考点主要包括：1. 名词性从句的连接词。如：有词义的连接代词wh, whse, whm, what, which; 连接副词when, where, why, hw; 从属连词that, whether, if, as if; 无词义的that在从句中不担任成分，有时可省略。 2. 名词性从句的语序和时态。3. it作形式主语、形式宾语的情况。It+be+形容词+that从句It+be+过去分词+that从句It+be+名词+that从句It+不及物动词(appear, happen等)+that从句
4. 名词性从句中的虚拟语气。It is (was)+essential (imprtant, natural…)+that…； It is (was) suggested (demanded, wished, desired…) that… 5. what引导名词性从句时的语义功能和语法功能。what=the thing that/ anything that…what=the place that…what=the time that…what=the persn that…6. whever, whatever, whichever引导名词性从句时的语义功能和语法功能。
1（2022新高考II卷）“I dn’t knw ___________ t thank him.”2（2022年浙江1月）Cbb, fr her party, started t ask cnference rganizers wh invited her t speak ___________ she culd d s remtely.3（2021新课标I卷）________is s breathtaking abut the experience is the ut-f-this-wrld scenes. 4（2021年北京卷）The pr wman wasn’t able t give him any infrmatin abut ________ she lived．5（2021年天津卷）What puzzles Lily’s friends is ________ she always has s many crazy ideas. A. whetherB. whyC. whatD. when
6（2021年天津卷）It seemed that I had becme ________ my parents had wanted me t be. A. when B. where C. what D. whether7 (2019全国卷Ⅰ) While they are rare nrth f 88°，there is evidence ________ they range all the way acrss the Arctic, and as far suth as James Bay in Canada.8 (2018全国卷Ⅲ) I’m nt sure ________ is mre frightened, me r the female grilla(大猩猩) that suddenly appears ut f nwhere.9 (2020全国新高考I）Write a pem abut ________ curage, determinatin, and strength have helped yu face challenges in yur life.10 (2018全国卷I）Ten years after my chess class with Ashley, I’m still putting t use ________he taught me.
Cmplete the passage using nun clauses with wrds in brackets.
There are many mysteries abut dinsaurs t which we lng t find explanatins. Yu may think that dinsaurs were big, green and scaly, right? In fact, it seems that they appeared very different frm 1 ____________ (think).In recent years, scientists have wrked ut 2 ___________________________ _________(lk): many f them were small with feathers. Hwever, 3 _______________ (have) feathers still isn’t clear — it might have been fr cmmunicating r fr staying warm, but nt just fr flight.Scientists als believe that many dinsaurs had bright clurs. It seems 4 _________________ (depend n) their habitats. That is, dinsaurs which culd fly wuld have had different clurs t thse living in the sea.
what we think
what they lked like/ hw they lked
whether they had
that depended n
Talk abut what caused the disappearance f dinsaurs using nun clauses where apprpriate. Yu may use the ntes t help yu.
Amng the many unslved mysteries abut dinsaurs, what really interests me is their disappearance. One pssible explanatin is that …
The Cretaceus-Tertiary extinctin event, r the K-T extinctin event, is the name given t the die-ff f the dinsaurs and ther species that tk place sme 65.5 millin years ag.
Fr many years, palentlgists believed this event was caused by climate and gelgical changes that interrupted the dinsaurs’ fd supply. Hwever, in the 1980s, father-and-sn scientists Luis and Walter Alvarez discvered in the gelgical recrd a distinct layer f iridium — an element fund in abundance nly in space — that crrespnds t the precise time the dinsaurs died.
This suggests that a cmet, asterid r meter impact event may have caused the extinctin f the dinsaurs. In the 1990s, scientists lcated the massive Chicxulub Crater at the tip f Mexic’s Yucatán Peninsula, which dates t the perid in questin.
D research int anther extinct creature. Share yur ideas abut why it disappeared using nun clauses where apprpriate.
The Glden Tad
The American Cheetah
The Eskim Curlew
The Blackfin Cisc
Schmburgk’s Deer
Brad-Faced Ptr
VcabularyBuilding
Facing the unknwn
Read the passage and answer the questins. Pay attentin t the wrds and expressins in bld.
When smething strange r unfamiliar happens, the flight instinct can kick in. Often, making a quick getaway is a sensible and understandable natural respnse, dating back t a time when ur ancestrs were running fr their lives frm dangers, such as wild animals, lightning and fire. S while yu may be tempted t check ut a strange bject r t test the waters f a new situatin, it can be safer t steer clear f the unfamiliar.
为了躲避危险而拼命奔跑
What is the flight instinct? Why d sme peple react that way in the face f the unknwn?What ther reactins culd peple have when facing the unknwn?
Flight instinct is ur instinctive reactin t get away frm a strange, unfamiliar r dangerus situatin.Sme peple react that way in the face f the unknwn because it is a sensible and understandable natural respnse.
Sme peple chse t vercme their fears and face the unknwn.
Put the wrds and expressins in Activity 5 int the table. Add any mre yu can think f.
making a quick getawayrunning fr their lives frmsteer clear f retreating tshrink frm
check uttest the waters fset ut intdelve inttaking actin
subdueendured
think twicelk intcnsider ur ptins
Listening&Speaking
Read the passage and answer the questins.
What functins f the brain are mentined in the passage?What is the current research situatin cncerning the brain?D yu knw any ther interesting facts abut the brain? Share them with the class.
The brain functins mentined include its being the centre f the nervus system and cntrlling mst f the bdy’s activities, including visin, memry, speech and rhythm.
There is still a lng way t g befre we can cmpletely understand the wrkings f the brain.
? Listen t the interview and chse the tpic discussed.
Methds t keep the brain healthy and active.Sleep-related mysteries.Ways f imprving sleep quality.Methds f interpreting dreams.
? Listen again and cmplete the table.
rest and d maintenanceremain activemakes lts f pisnus chemicalsremve these chemicalsenugh datathe mst imprtant reasnNew cnnectins are frmed between different partsuses them t frm new memriessleep is necessary t this functinWhy d sme peple dream in clur and thers dn’t?
Nw use the infrmatin in the table t give a lecture t the class. D further research if necessary.
Cmplete the bxes with the expressins frm the interview.
Culd yu tell us smething ther reasns culd there be fr it?Wuld yu tell us mre
it’s prve that...
Talk abut the investigatins int anther scientific mystery using the wrds and expressins in this sectin. D further research if necessary.
Review nun clauses.Use the new wrds and expressins t write abut the investigatins int anther scientific mystery.