公開課人教版七年級下冊unit4祈使句課件

ImperativeSentenceImperativeSentence1FreetalkWhatcanwedoatschoolorintheclassroom?Whatcan’twedo?How

tobeagoodstudent?FreetalkWhatcanwedoatsch2Don'teatinclass.Don'tarrivelateforclassDon'tsleepinclass.Don'tdrawonthewall.Don'ttalk.Don'tplaysportsintheclassroom.Don'tfight.Don'tlistentomusicinclass.schoolrulesDon't...ReviewDon'teatDon'tarriveDon'ts3

祈使句是表示請求、命令、建議或勸告等的句子。一.祈使句的概念I(lǐng)mperativeSentence祈使句是表示請求、命令、建議或勸告等的句子。一4二.祈使句的特點Wecleantheclassroomeveryday.

Heusuallygoestothelibraryonweekends.2.謂語動詞一律用原形。1.主語通常為you,但常省略。3.句末根據(jù)語氣的強弱用感嘆號或句號。Don'tarrivelateforclass.Sitdown,please!二.祈使句的特點Wecleantheclassroom5Ms.ChensaysCleantheblackboard.Standup!Sitdown,please!

Pleaseopenthedoor.TurntoPage21.Listentomecarefully.Game:Isay,youdoMs.ChensaysCleantheblackbo6Readandobserve(觀察)Clean

theblackboard.Standup!Listentomecarefully.TurntoPage21.Sitdown,please!Pleaseopenthedoor.

Don'tbelateforclass.Don'teatintheclassroom.Don'truninthehallways.Don'tfight.Don'tsleepinclass.Don'twearahatinclass.positivenegativeReadandobserve(觀察)Cleanthe7Drawtheconclusion(得出結(jié)論)祈使句的結(jié)構(gòu)如下：

(Please)+Dosth.

(Please)+Don’tdosth.肯定：否定：Drawtheconclusion(得出結(jié)論)祈使句的8注意：有時可在祈使句的句首或句尾加上please，使語氣顯得客氣、有禮貌。如果在句尾加please，應(yīng)該用逗號與前句隔開。e.g.Gothisway,please.請這邊走。

Pleasegothisway.注意：9三.祈使句的形式1.祈使句的肯定式(1).以行為動詞原形開頭，簡稱Do型。e.g.Comehere.(2).以動詞be開頭，簡稱Be型。e.g.Bequiet,please.

Bekindtoyourclassmates.(3).以Let開頭，簡稱Let型。e.g.Let’sgo!

Let'splaybasketballafterschool.

“三姐妹”三.祈使句的形式1.祈使句的肯定式(1).以行為動詞原形開10Turnright!Turnleft!Bequiet.Goupstairs！Godownstairs!signsTurnright!Turnleft!Bequiet.112.祈使句的否定式(1).Do型和Be型的否定式是在句首加don’t。e.g.Don’tsithere.不要坐在這兒。

Don’tbelate.別遲到。(2).以let開頭的祈使句，其否定式有兩種：一種是直接在句首加don’t，另一種是“l(fā)et+賓語+not+動詞原形+(其他)”。e.g.Don’tlethimgo.不要讓他走。Let’snotgothere.咱們別去那兒。“三兄弟”2.祈使句的否定式(1).Do型和Be型的否定式是在句首加12注意：(3)“No+名詞/動詞-ing形式”表示禁止或規(guī)勸，常用于公共場所。e.g.Nophotos!禁止拍照！

Noswimming！

禁止游泳！注意：13GuessingGameDon’tparkyourcar.Don’tsmoke!Noparking!Nosmoking!GuessingGameDon’tparkyourc14GuessingGameDon’ttakephotos!Don’tswimhere!Nophotos!Noswimming!GuessingGameDon’ttakephotos15LibraryRulesDon’ttalk.________________________________________________Writetherulesfortheschoollibrary.Don’tlistentomusic.Don’teatordrink.Don’ttakephotos.方法指導(dǎo)：1.由圖示可知都是一些禁止類的祈使句。2.可知應(yīng)用祈使句的否定形式。Task1:LibraryRulesWritetherulesf16Ifyouaretheheadteacher(班主任),discussandmakerulesforourclass.

Seewhichgroupcansaythemostclassrules.RulesofClass11_____________________________________________________________________________...PKTask2Ifyouaretheheadteacher(班主任17ReportRulesofCass11_______________________________________________________________________________________________________________________________________________________________________________...Don'tbelateforclass.Don’teatordrinkintheclassroom.Don’truninthehallways.Wearschooluniformsonschooldays.Cleantheclassroomeveryday.ReportRulesofCass11Don'tbe18祈使句的用法主語是you常省去，動詞原形開頭記。否定形式要注意，句首要把don’t加。要講客氣用please，

句首、句末沒關(guān)系。SummaryBeagoodstudent.祈使句的用法主語是you常省去，動詞原形開頭記。Summar19公開課人教版七年級下冊unit4祈使句ppt課件20HomeworkTrytowritedownatleastfive

sentencesaboutyourfamilyrules.HomeworkTrytowritedownatl211.Don’twaste(浪費)water.7.Don’treadinbed.2.Makethebedeveryday.3.Washyourha