專項提升句型鞏固第四節(jié)祈使句知識梳理一、祈使句的概念 祈使句是用于表達命令、請求、勸告、警告、禁止等的句子。祈使句因?qū)ο?主語)是第二人稱，通常省略主語。祈使句的時態(tài)都為一般現(xiàn)在時，句末可以用感嘆號來表達比較強烈的語氣，也可以用句點結(jié)尾。如： 命令：Goandwashyourhands！去洗一下你的手！ 請求：Bequiet，please.請安靜。勸告：Bekindtoyourfriends.善待你的朋友。警告：Watchyoursteps.注意臺階。禁止：Keepoffthegrass！請勿踐踏草地！二、祈使句的結(jié)構(gòu)結(jié)構(gòu)舉例動詞原形+其他.（有的祈使句在句意明確的情況下，可省略動詞）Sitdown,please.請坐下。Gothisway,please.=Thisway,please.請往這邊走。Be+名詞短語/形容詞+其他.Beagoodboy!做個好孩子！Becareful.小心！續(xù)表結(jié)構(gòu)舉例Let+賓語+動詞原形+其他.Letmehelpyou.讓我來幫你。Let'scleanourclassroom.我們打掃教室吧。【注】為了加強語氣，可在動詞前加do。如：Domakeyourroomclean.務(wù)必保持你的房間整潔。Dobecareful!務(wù)必小心。DoletMarywatertheflowers.務(wù)必讓瑪麗澆花。三、祈使句改為否定形式的方法情況否定結(jié)構(gòu)舉例以動詞原形/be動詞開頭Don't+動詞原形/be動詞+其他.Don'tforgetme!不要忘記我！Don'tbelateforschool.上學不要遲到。續(xù)表情況否定結(jié)構(gòu)舉例以let開頭Don't+let+賓語+動詞原形+其他.Don'tlethimgo.不要讓他走。Let+賓語+not+動詞原形+其他.Lethimnotgo.讓他別走。續(xù)表情況否定結(jié)構(gòu)舉例其他No+名詞/動名詞.Nopets.禁止寵物入內(nèi)。Nosmoking!禁止吸煙！考點精析【例1】Readandchoose.給下列標志選擇適當?shù)臉酥菊Z，并將其字母編號寫在橫線上?？疾槠硎咕涞倪\用考點A.Don'tlitter!

B.Don'tturnleft.C.Nofishing.

D.Don'ttouchthedoor.解析:本題考查根據(jù)圖片選擇適當?shù)钠硎咕洹Ｆ硎咕渥畛Ｒ姷挠梅ň褪怯迷诰九粕?。答案?.B2.D3.A4.C【例2】Readandwrite.根據(jù)所提供的場景寫出適當?shù)钠硎咕洹?.有幾個孩子在馬路上踢足球，你會對他們說：_____________________________________________2.有小朋友在無人監(jiān)管的河里游泳，你會對他們說：_____________________________________________解析:本題考查祈使句的日常用法。注意口語表達的時候，禁止類祈使句多用Don't形式。答案：1.Don'tplayfootballontheroad.2.Don'tswimintheriver.一、Readandwrite.根據(jù)例句，仿寫句子。例：Youcan'ttouchthedoorinthesubway.Don'ttouchthedoorinthesubway.1.Youshouldn'tdrivetoofast._____________________________________________Don'tdrivetoofast.2.Youmustnotlookoutofthewindow._____________________________________________3.Youmuststopataredlight._____________________________________________4.Youshouldn'tbelateforschool._____________________________________________5.Youcan'tswimintheriver._____________________________________________Don'tlookoutofthewindow.Stop/Dostopataredlight.Don'tbelateforschool.Don'tswimintheriver.二、Readandwrite.根據(jù)所提供的場景寫出適當?shù)钠硎咕洹?.邀請朋友做客，你想請他吃蘋果，你會說：_____________________________________________2.你想邀請朋友一起下棋，你會說：_____________________________________________Haveanapple,please！Let'splaychesstogether.3.你想讓一個想要進入草坪的小朋友別踐踏草坪，你會說：_____________________________________________4.在圖書館內(nèi)，你想讓其他人安靜，你會說：_____________________________________________5.你想提醒他人開車不要開太快，你會說：_____________________________________________Keepoffthegrass.Bequiet!Don'tdrivetoofast.過關(guān)檢測一、Readandchoose.給下列標志選擇適當?shù)臉酥菊Z，并將其字母編號填在括號內(nèi)。A.Noeatingordrinking！

B.Nocameras！C.Nosmoking！

D.Noparking！ E.Noswimming！

F.Nopets.ACBDEF二、Readandwrite.將下列句子改為祈使句。1.Youmustn'tplayontheroad._____________________________________________2.Youcan'teatinthecomputerroom._____________________________________________3.Youshouldn'tsleeptoolate._____________________________________________Don'tplayontheroad.Don'teatinthecomputerroom.Don'tsleeptoolate._4.Youmustcloseyourbookandlookattheblackboard._____________________________________________5.Everyonemustn'tsmokehere._____________________________________________Close/Docloseyourbookandlookattheblackboard.Don'tsmokehere./Nosmokinghere.三、Readandchoose.讀句子，選擇正確的答案，并將其字母編號填在括號內(nèi)。()1.Ifyouaretired，__________arest.A.have

B.having

C.tohave()2.Heisnothonest.__________believe（相信）him.A.Not B.Don't C.DoAB()3.__________inthestreet.It'sdangerous.A.Notplay B.Nottoplay C.Don'tplay()4.__________theboxes.Youmayusethemlater（后來）.A.Keep B.Keeping

C.Tokeep()5.Thereisasignonthedoorofthemuseum.Itsays“No__________photos!”A.take B.taking

C.totakeCAB四、Readandtranslate.翻譯句子。1.請等一等她。_____________________________________________2.明天務(wù)必早點起床。_____________________________________________3.不要跑那么快！_____________________________________________Pleasewaitfo