高中英語新人教版選擇性必修第二冊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+系動詞+引導(dǎo)詞+簡單句系動詞表語Underlinealltheexamplesinthereadingpassagewherenounclausesareusedasthepredicative.Thenstatetheirmeaningandfunctions.1.Onetheorywasthat_____________________________________2.Anotherwas______________________________________3.Thetruthwas__________________________________thatcholerawascausedbyaninfectionfromgermsinfoodorwater.badaircausedthedisease.thatthewaterfromtheBroadStreetpumphadbeeninfectedbywaste.S+V+PlinkverbPredicative表語Predicativeisused______thelinkverb.AsentencewhichisusedaspredicativeisPredicativeClause表語從句.①be動詞;②感官動詞：sound,taste,smell,look,feel;behindItlookasif…Itturnedoutthat…總結(jié)Grammarfocus:表語從句之引導(dǎo)詞1.引導(dǎo)詞的用法(that)

that在表語從句中

,又

且______

省略。1.Thefactisthat

hehasn’tyetrecoveredfromillness.2.Thereasonwhyhehastogoisthathismotherisillinbed.

既不充當(dāng)成分沒有意義不可whether在表語從句中表

,

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

在表語從句中充當(dāng)______________

表示____________________________.1.Thequestionis

whatcausedtheaccident.

2.Thatmountainisnolongerwhatitusedtobe.3.Whathetoldyouwaswhat

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

(what)主語表語賓語

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

canturnto.主語、賓語或表語誰4.引導(dǎo)詞的用法

(who)主語賓語

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

表示

。

Ireadaboutitinsomebookoranother,butwhatIdon’tknowiswhich(book)itis.

定語,表語其/當(dāng)中哪一個5.引導(dǎo)詞的用法(which)定語由asif,asthough引導(dǎo)表語從句，表示

。句子中的系動詞常用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)主句的主語為reason,或者是由why引導(dǎo)的從句時,與它們相關(guān)的表語從句用_________,而不能由__________引導(dǎo);because引導(dǎo)表語從句時只能用于___________________________________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)表語從句中主語、賓語、表語具備，但是還是要表示疑問含義，可以判斷句子中缺少狀語，常常用相應(yīng)的特殊疑問詞引導(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…時候在哪里怎么樣

Answerthefollowingquestionsusingtheinformationfromthereadingpassageaswellast