Unit1LifeChoicesLesson1LifestylesGrammar課件高一英語北師版

Unit1Lesson1LifestylesGrammar新課導(dǎo)入Whatdoyourememberaboutthem?1.AccordingtoJoe,whatisimportant?2.Whatdoesheneedtodo?Itisimportanttomeetfriendsinpersonfromtimetotime,notjustonsocialmedia.Heneedstodraghimselfawayfromtheonlineworldsometimes.課堂學(xué)習(xí)Studythesesentences.Itisimportanttomeetfriendsinpersonfromtimetotime,notjustonsocialmedia.Ineedtodragmyselfawayfromtheonlineworldsometimes.infinitive不定式subject主語object賓語91.Mymumkeepstellingmetogooutwithmyschoolfriendsinstead.2.It’simportanttomeetfriendsinpersonfromtimetotime.3.WhenIsetouttodosomething,Idomybesttoachieveit.4.Mytargetistopreparemyselfformydegreeinbiologyatuniversity.5.LiYingisthefirstpersontojointhevolunteeringclubinherclass.predicative表語attributive定語adverbial狀語subject主語object賓語動詞不定式

不定式的構(gòu)成1.定義

動詞不定式是非謂語動詞的一種，由不定式to+do構(gòu)成。沒有人稱和數(shù)的變化，在句子中不能作謂語，但可做主語、表語、賓語、狀語和賓語補足語，具有名詞、形容詞和副詞的特征。

動詞不定式仍保留動詞的一些特點。Grammar2.形式時態(tài)主動被動一般式todotobedone完成式tohavedonetohavebeendone進(jìn)行式tobedoing完成進(jìn)行式tohavebeendoing否定式：否定詞（not/never）+動詞不定式

不定式的作用1.作主語不定式作主語時，謂語用單數(shù)。往往用it作形式主語，把不定式放在謂語后面。Eg:Ittookustwohourstofinishthejob.

2.作賓語①

動詞+不定式

Eg:Hemanagedtoescapefromthefire.②

動詞+疑問詞+to，“特殊疑問句+不定式”相當(dāng)于名詞，作賓語。Eg:Idon'tknowwhattodonext/howtodoitnext.[名師點津]不定式短語作賓語時，如果還帶有賓語補足語，往往把不定式短語放在賓語補足語之后，用it作形式賓語。Eg:Ifinditnecessarytolearnaforeignlanguage.3.作賓語補足語①

動詞+賓語+不定式（todo）Eg:Hewarnedmetobecareful.[名師點津]可以用動詞不定式作賓補的動詞有：ask,tell,order,want,get,wouldlike,like,advise,invite,allow,help,wish,warn,expect,wouldprefer,encourage.②

表見解、看法的動詞結(jié)構(gòu)可為：動詞+賓語+tobe的不定式結(jié)構(gòu)。Eg:WeconsiderTomtobeoneofthebeststudentsinourclass.

Thebookisbelievedtobeuseful.（被動語態(tài)）③

There+不定式Eg:Wedidn'texpecttheretobesomanypeoplethere.④

在動詞feel(一感),hear,listento(二聽),have,let,make(三讓),notice,see,watch,observe,lookat(五看)（即：吾看三室兩廳一感覺）等后面的補足語中，不定式不帶to，但變?yōu)楸粍诱Z態(tài)后，必須帶to。Eg:Theysawtheboyfalloffthetree.⑤

help后面作賓語補足語的不定式可以帶to，也可以不帶to。Eg:Ioftenhelphim(to)cleantheroom.

Ihelpedhim(to)findhisthings.4.作定語不定式作定語，修飾名詞或代詞，不定式和它所修飾的名詞之間有邏輯上的主謂關(guān)系、動狀關(guān)系、同位關(guān)系或動賓關(guān)系。不定式通常要放在這些被修飾的詞后。Eg:Ihavealotofworktodo.（動賓關(guān)系）

Heislookingforaroomtolivein.（動狀關(guān)系）

Heisthefirstpersontothinkoftheidea.（主謂關(guān)系）

Hehasgotachancetogoabroad.（同位關(guān)系）[名師點津](1)不定式的邏輯主語是句子的主語時，不定式用主動形式表被動。Eg:Doyouhaveanythingelsetosay?(2)如果作定語的不定式是一個短語，則要保留不定式短語中的副詞或介詞。Eg:Ineedapentowritewith.（willwritewiththepen.）

Ihavealittlebabytolookafter.（Imustlookafterthelittlebaby.）5.作狀語作狀語，表示目的、結(jié)果、原因等，有時還有一些固定搭配的不定式短語，如inorderto,soasto,so...asto,such...asto,enoughto,too...to等。①

作目的狀語，justto,onlyto（僅僅為了）,inorderto,soasto,so/such...asto...（如此……以便……）Eg:Heransofastastocatchthefirstbus.②

作結(jié)果狀語，表事先沒有預(yù)料到的，要放在句子后面。Eg:Hehurriedtothepostofficeonlytofinditwasclosed.③作原因狀語Eg:Wewereveryexcitedtohearthenews.④作條件狀語Eg:Toturntotheleft,youcouldfindapostoffice.6.作表語不定式可放在be動詞后面，構(gòu)成表語。Eg:Thequestionishowtoputitintopractice.[名師點津](1)不定式在句中作表語時，對應(yīng)的謂語動詞用單數(shù)。(2)當(dāng)主語是不定式時，表語不能用v.-ing形式，可用不定式。Eg:Toseeistobelieve.（眼見為實）（Seeingisbelieving.）10Completetheblogentrywiththecorrectformofthewordsinthebrackets.Iwakeupatsixo’clockeverymorning.It_______(take)melessthan15minutes_________(wash),getchanged,havebreakfastandleavehome.I’malwaysthefirstperson_______(get)tomyclass.Themorningsarealwaysverybusyandtheafternoonsareevenbusier!Byaroundfiveo’clock,Iusually_______(find)time_______(do)mypaperworkandpreviewthelessons.Youmaythinkthatit_______(be)boring________(do)thesamethingeveryday,butIlikebeingbusy.

(WangQing,16yearsold)takestowashtogetfindtodoistodoExpressyourself11PairworkDiscussyourideallifestylewithapartner.Whatisyourideallifestyle?Comparedwithyourcurrentlifestyle,howisitdifferent?Myideallifestyle?