高中英語(yǔ)新人教版選擇性必修第二冊(cè)Unit1ScienceandScientistsPeriod3Discoveringusefulstructures課件(共20張)

人教版選擇性必修二Period3DiscoveringusefulstructuresThePredicativeClausesUnit1ScienceandScientists1.EnabletheSstomastertheusageofpredicativeinthisunit.2.EnabletheSstousethepredicativepatternsflexibly.3.TraintheSstoapplysomeskillsbydoingtherelevantexercises.TeachingGoalsGrammarfocus:PredicativeclausesThequestioniswhowilldoit.定義：表語(yǔ)從句放在

之后，充當(dāng)復(fù)合句中的

。結(jié)構(gòu):

Itseemsthatitisgoingtorain.Itlooksasifheisunhappytoday.自我探究主語(yǔ)+系動(dòng)詞+引導(dǎo)詞+簡(jiǎn)單句系動(dòng)詞表語(yǔ)Underlinealltheexamplesinthereadingpassagewherenounclausesareusedasthepredicative.Thenstatetheirmeaningandfunctions.1.Onetheorywasthat_____________________________________2.Anotherwas______________________________________3.Thetruthwas__________________________________thatcholerawascausedbyaninfectionfromgermsinfoodorwater.badaircausedthedisease.thatthewaterfromtheBroadStreetpumphadbeeninfectedbywaste.S+V+PlinkverbPredicative表語(yǔ)Predicativeisused______thelinkverb.AsentencewhichisusedaspredicativeisPredicativeClause表語(yǔ)從句.①be動(dòng)詞;②感官動(dòng)詞：sound,taste,smell,look,feel;behindItlookasif…Itturnedoutthat…總結(jié)Grammarfocus:表語(yǔ)從句之引導(dǎo)詞1.引導(dǎo)詞的用法(that)

that在表語(yǔ)從句中

,又

且______

省略。1.Thefactisthat

hehasn’tyetrecoveredfromillness.2.Thereasonwhyhehastogoisthathismotherisillinbed.

既不充當(dāng)成分沒(méi)有意義不可whether在表語(yǔ)從句中表

,

但_______句子的成分。

1.Whatthedoctorreallydoubtsiswhether

mymotherwillrecoverfromtheseriousdiseasesoon.2.Thequestioniswhether

itis

worthdoing.“是否”2.引導(dǎo)詞的用法(whether)不充當(dāng)√iforwhether?if/whether

whether√what

在表語(yǔ)從句中充當(dāng)______________

表示____________________________.1.Thequestionis

whatcausedtheaccident.

2.Thatmountainisnolongerwhatitusedtobe.3.Whathetoldyouwaswhat

hadbeendiscussedatthemeeting.主語(yǔ)、表語(yǔ)、賓語(yǔ)什么，什么樣子，或所…的（人或事）3.引導(dǎo)詞的用法

(what)主語(yǔ)表語(yǔ)賓語(yǔ)

who在表語(yǔ)從句中充當(dāng)______________表示____.Theproblemiswhocoulddothework2.Mytroubleiswho(whom)I

canturnto.主語(yǔ)、賓語(yǔ)或表語(yǔ)誰(shuí)4.引導(dǎo)詞的用法

(who)主語(yǔ)賓語(yǔ)

which在引導(dǎo)表語(yǔ)從句時(shí),常充當(dāng)_____________

表示

。

Ireadaboutitinsomebookoranother,butwhatIdon’tknowiswhich(book)itis.

定語(yǔ),表語(yǔ)其/當(dāng)中哪一個(gè)5.引導(dǎo)詞的用法(which)定語(yǔ)由asif,asthough引導(dǎo)表語(yǔ)從句，表示

。句子中的系動(dòng)詞常用look,appear,seem等。1.It

looks

asifitwasgoingtorain.2.Theyoungmanwithlonghairlooks

asifhewereagirl.

6.引導(dǎo)詞的用法（asif,asthough）好像

當(dāng)主句的主語(yǔ)為reason,或者是由why引導(dǎo)的從句時(shí),與它們相關(guān)的表語(yǔ)從句用_________,而不能由__________引導(dǎo);because引導(dǎo)表語(yǔ)從句時(shí)只能用于___________________________________句型中.1.ThereasonwhyIwaslatewasthat

Imissedthetrain.2.Iwaslate.It/That/Thiswasbecause

Imissedthetrain.thatbecauseIt/That/Thisis/wasbecause…7引導(dǎo)詞的用法（thereasonwhy…isthat/Itisbecause…）當(dāng)表語(yǔ)從句中主語(yǔ)、賓語(yǔ)、表語(yǔ)具備，但是還是要表示疑問(wèn)含義，可以判斷句子中缺少狀語(yǔ)，常常用相應(yīng)的特殊疑問(wèn)詞引導(dǎo)，有why表

,when表

,where表

,how表

等。Thisishowhedidit.Thatiswhythebrotherswantedtomakeabet.That’swhywe’vegivenyoutheletter.8.引導(dǎo)詞的用法(why/when/where/how)為什么在…時(shí)候在哪里怎么樣

Answerthefollowingquestionsusingtheinformationfromthereadingpassageaswellast