狀語從句的省略與非謂語動詞2021/5/91在英語學習過程中，我們經常遇到狀語從句中的省略用法，它是一種簡潔、精練、地道的文字表達形式，也是值得關注的一個高考考點。

狀語從句的省略規則如果主句和從句的主語一致,且謂語包含系動詞be的某種形式，那么可以將從句的主語及動詞be省略。

省略結構中非謂語的使用是高考的熱點。

2021/5/92一、when,while,until引導的時間狀語從句【經典例句】1.When(it

is)taken

according

to

the

directions，the

drug

has

fewer

side

effects.2.Dobecarefulwhen（youare）crossingthestreet.3.Don’tcomeinuntil(youare)askedto.

【高考鏈接】1.(2013浙江卷)Therearesomehealthproblemsthat,when______intime,canbecomebiggeroneslateron.A.nottreated B.notbeingtreatedC.nottobetreated D.nothavebeentreated

2021/5/932.(2013福建卷)Anyone,once____positiveforH7N9fluvirus,willreceivefreemedicaltreatmentfromourgovernment.A.tobetested B.beingtested C.tested D.totest3.(2012安徽卷)When____forhisviewsabouthisteachingjob,Philipsaidhefounditveryinterestingandrewarding.A.askingB.askedC.havingaskedD.tobeasked

2021/5/944.(12全國I)Filmhasamuchshorterhistory,especiallywhen_______suchartformsasmusicandpainting.havingcomparedtoB.comparingto C.comparetoD.comparedto5.(06浙江)When______differentcultures,weoftenpayattentiononlytothedifferenceswithoutnoticingthemanysimilarities.A.compared

B.beingcompared

C.comparing

D.havingcompared2021/5/956.(2004全國IV)Itshamesmetosayit,butItoldaliewhen____atthemeetingbymyboss.A.questioningB.havingquestioningC.questionedD.tobequestioned7.(2004全國II)Whenfirst______tothemarket,theseproductsenjoyedgreatsuccess.A.introducingB.introducedC.introduceD.beingintroduced

2021/5/96二、if,unless,once引導的條件狀語從句。

【經典例句】1.If（itis）properlytreated,wastewilldonoharmtotheenvironment.2.I’llnotgotothepartyunless（Iam）invited.Once（youare）caughtstealinginasupermarket,youwillbepunished.

2021/5/971.(13江西)If_____tolookafterluggageforsomeoneelse,informthepoliceatonce.A.asked B.toask C.asking D.havingasked…,youinformthepoliceatonce=If(youare)askedtolookafter…【高考鏈接】2021/5/982.(2009湖南)Everyeveningafterdinner,ifnot

_____fromwork,Iwillspendsometimewalkingmydog.

A.beingtired

B.tiring

C.tired

D.tobetired3.(2007四川)Theflowershisfriendgavehimwilldieunless________everyday.A.wateredB.wateringC.waterD.towater

2021/5/99三、though,although,evenif,eventhough,however等引導的讓步狀語從句。【經典例句】1.Evenif(Iam)invitedto,Iwon’tgotosuchabadlecture.2.Though/Although（hewas）blamedforhismistake,theboydidn'tseemtobeangry.【高考鏈接】1.(2010全國Ⅱ)Though______toseeus,theprofessorgaveusawarmwelcome.A.surprisingB.assurprisedC.surprisedDbeingsurprised

2021/5/9102.(2006廣東)Nomatterhowfrequently________,theworksofBeethovenstillattractpeopleall