單元語法聚焦[祈使句]Unit3Safety

教材典句Lookatthisyellowstar,BrianandJenny!

布萊恩、詹妮，看這顆黃色的星星！2.Letmegettheladderforyou.

讓我給你拿把梯子。3.Don'tstandonchairs.不要站在椅子上。單元語法聚焦4.Becarefulwithscissorsandknives!小心剪刀和刀子！5.Neversmokebecauseofmuchpressure!永遠不要因為壓力大而吸煙！單元語法聚焦語法探究

1.定義祈使句是英語中的基本句型之一，用來表達建議、命令、請求、警告、勸告、禁止等語氣。祈使句的主語一般為第________人稱，通常可以________。為了使語氣更加客氣或緩和，可在句前或句末加上________一詞。二單元語法聚焦省略please2.構(gòu)成

(1)祈使句的肯定形式一般以________動詞或________動詞原形開始，也可以以動詞let開始。(2)祈使句的否定形式一般在句首加________或________。(3)以let開頭的祈使句：肯定句：Lethimcomein.否定句：Don'tlethimcomein.或Lethimnotcomein.單元語法聚焦實義bedon'tnever(4)有些祈使句可用No開頭，表示禁止。Nosmoking,please.請不要吸煙。Nophotos!禁止拍照！單元語法聚焦3.拓展

(1)祈使句的反意疑問句①祈使句的反意疑問句，若陳述部分是否定句，則附加問句只能

用willyou。若陳述部分是肯定句，附加問句既可用willyou，也可用won'tyou。②let's開頭的祈使句用于提出建議，包括對方，其附加問句用shallwe。letus開頭的祈使句表示征求對方許可，其附加問句用willyou。單元語法聚焦Don'tdothatagain,willyou?Gowithme,willyou/won'tyou?Let'sgo,shallwe?Letustakeanexam,willyou?(2)祈使句用于兩個重要句型①“祈使句＋and＋表結(jié)果的陳述句”用來敘述肯定的條件。②“祈使句＋or＋表結(jié)果的陳述句”用來敘述否定的條件。單元語法聚焦[注意]這兩個句型都可以改寫為if引導的條件狀語從句。Workhard,andyouwillpasstheexam.(＝Ifyouworkhard,youwillpasstheexam.)Workhard,oryouwillnotpasstheexam.(＝Ifyoudon'tworkhard,youwillnotpasstheexam.)單元語法聚焦實戰(zhàn)演練

Ⅰ.單項選擇(

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1.2017·白銀Boysandgirls，________learningandhavefun.A．keepB．tokeepC．keepingD．keptA單元語法聚焦(

)2.________carefully,please!Lookattheroadsign.Thereisaschoolahead.A．DriveB．TodriveC．DrivingD．Drives單元語法聚焦A(

)3.________patientwithhim,please.Heisonlythreeyearsold.A．Don'tB．BeC．IsD．Does單元語法聚焦B(

)4.2017·渝北________throwingthosestones,please.A．StopB．StopsC．StoppingD．Stopped單元語法聚焦A(

)5.2017·安徽Holdyourdream，________youmightregretsomeday.A．a(chǎn)ndB．orC．butD．so單元語法聚焦B(

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6.2017·濱州—IwanttobeateacherwhenIgrowup.—Workhard，________yourdreamwillcometrue.A．orB．butC．thoughD．a(chǎn)nd單元語法聚焦DⅡ.按要求完成下列各題1.2017·達州Thiswarningsigntellsusnottopickflowers.(保持句意基本不變)Thiswarningsignsays“____________________flowers”．2.2016·天水Tellhimthetruthatonce,orhewillbeangry.(改為主從復合句)________________don'ttellhimthetruthatonce,hewillbeangry.pick/Nopicking單元語法聚焦Don'tIfyou3.2017·天水Letusgohiking,________________？(完成反意疑問句)4.Youshouldberelaxed.(改為祈使句)________________，please.5.Don'tparkhere.(改為同義句)________________！will單元語法聚焦BerelaxedNoparkingyou單元語法聚焦[過去進行時&must的用法]Unit4StoriesandPoems

教材典句Onedaythechildrenwereplayinginthegardenwhenagiantappeared.一天，孩子們正在花園里玩耍，這時一個巨人出現(xiàn)了。2.Itwaswearingabigyellowhat.它戴著一頂黃色的大帽子。單元語法聚焦3.Hethoughtitmustbetheking'smusicianspassingby.他想一定是國王的樂師們正在經(jīng)過。Ithinkagoodstorymusthavegreatcharactersandaninterestingplot.我認為一個好故事必須有重要的人物和一個有趣的情節(jié)。單元語法聚焦語法探究

一、過去進行時1.定義過去進行時表示在________某一時刻或某一時間段內(nèi)________發(fā)生或進行的動作。2.結(jié)構(gòu)主語＋________/________＋________＋其他過去單元語法聚焦正在wasweredoing3.時間狀語常用的時間狀語有atfiveyesterday,thewholemorning,when/while引導的時間狀語從句。單元語法聚焦二、must的用法1.must是________動詞，后面要接實義動詞或be動詞的原形。2.must意為“必須”，mustn't意為“不準；禁止”。3.must還可以用來表示推測，意為“________”，用于肯定句，表示較大可能的推測。否定的推測要用can't,意為“________”。單元語法聚焦情態(tài)一定不可能4.注意：(1)must構(gòu)成的一般疑問句的回答：肯定回答用must，否定回答用needn't或don'thaveto?！狹ustIleavenow?—Yes,youmust./No,youneed't./No,youdon'thaveto.(2)must強調(diào)主觀上認為“必須”做的事；haveto強調(diào)客觀上“不得不”做的事。單元語法聚焦實戰(zhàn)演練

Ⅰ.單項選擇(

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1.—Whydidthecarhittheboy?—Becausethedriver______onthephoneatthattime.A．talk

B．istalkingC．wastalkingD．havetalkedC單元語法聚焦(

)2.—Ourclassmateswenttoaconcertyesterdayafternoon.—Whatapity!I________myhomework.A．haddoneB．wasdoingC．a(chǎn)mdoingD．woulddo單元語法聚焦B(

)3.—Didyouhearsomeoneknockatthedoorjustnow?—Sorry.I________tomyfriendonthephone.A．wastalkingB．talkedC．a(chǎn)mtalkingD．talk單元語法聚焦A(

)4.2017·白銀We_______TVfromseventoninelastnight.A．werewatchingB．willwatchC．watchedD．watch單元語法聚焦A(

)5.2017·蘭州Whenyou________melastnight,I________thepiano.A．werecalling;wasplayingB．werecalling;playedC．called;playedD．called;wasplaying單元語法聚焦D(

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6.2017·隨州—DidyouwatchthefootballmatchonTVlastnight?—Iwantedto,butmyfather______hisfavouriteTVprogram.A．watchedB．watchesC．waswatchingD．hadwatched單元語法聚焦C(

)7.2017·日照Ifyouwanttobeontheschoolfootballteam,you________trainharder.A．canB．willC．mayD．must單元語法聚焦D(

)8.2017·丹東—Hurryup,Mum!Thebusiscoming.—Waitaminute,dear.You____crosstheroaduntilthetrafficlightsturngreen.A．mustB．needC．mustn'tD．needn't單元語法聚焦C(

)9.2017·畢節(jié)—MustIfinishthehomeworkthismorning?—________.A．No,youmustn'tB．No,youcan'tC．No,youmaynotD．No,youneedn't單元語法聚焦D(

)10.2017·云南—IsawSusaninthelibraryjustnow.—No,it______beher.ShewenttoShanghaithismorning.A．mustB．can'tC．mayD．needn't單元語法聚焦BⅡ.按要求完成下列各題TheyweretalkinghappilyintheroomwhenIsawthemjust