公開課人教版七年級(jí)下冊(cè)u(píng)nit4祈使句

ImperativeSentenceFreetalkWhatcanwedoatschoolorintheclassroom?Whatcan’twedo?How

tobeagoodstudent?Don'teatinclass.Don'tarrivelateforclassDon'tsleepinclass.Don'tdrawonthewall.Don'ttalk.Don'tplaysportsintheclassroom.Don'tfight.Don'tlistentomusicinclass.schoolrulesDon't...Review

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

Heusuallygoestothelibraryonweekends.2.謂語(yǔ)動(dòng)詞一律用原形。1.主語(yǔ)通常為you,但常省略。3.句末根據(jù)語(yǔ)氣的強(qiáng)弱用感嘆號(hào)或句號(hào)。Don'tarrivelateforclass.Sitdown,please!Ms.ChensaysCleantheblackboard.Standup!Sitdown,please!

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

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

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

(Please)+Dosth.

(Please)+Don’tdosth.肯定：否定：注意：有時(shí)可在祈使句的句首或句尾加上please，使語(yǔ)氣顯得客氣、有禮貌。如果在句尾加please，應(yīng)該用逗號(hào)與前句隔開。e.g.Gothisway,please.請(qǐng)這邊走。

Pleasegothisway.三.祈使句的形式1.祈使句的肯定式(1).以行為動(dòng)詞原形開頭，簡(jiǎn)稱Do型。e.g.Comehere.(2).以動(dòng)詞be開頭，簡(jiǎn)稱Be型。e.g.Bequiet,please.

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

Let'splaybasketballafterschool.

“三姐妹”Turnright!Turnleft!Bequiet.Goupstairs！Godownstairs!signs2.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(yǔ)+not+動(dòng)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”注意：(3)“No+名詞/動(dòng)詞-ing形式”表示禁止或規(guī)勸，常用于公共場(chǎng)所。e.g.Nophotos!禁止拍照！

Noswimming！

禁止游泳！GuessingGameDon’tparkyourcar.Don’tsmoke!Noparking!Nosmoking!GuessingGameDon’ttakephotos!Don’tswimhere!Nophotos!Noswimming!LibraryRulesDon’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:Ifyouaretheheadteacher(班主任),discussandmakerulesforourclass.

Seewhichgroupcansaythemostclassrules.RulesofClass11_____________________________________________________________________________...PKTask2ReportRulesofCass11_______________________________________________________________________________________________________________________________________________________________________________...Don'tbelateforclass.Don’teatordrinkintheclassroom.Don’truninthehallways.Wearschooluniformsonschooldays.Cleantheclassroomeveryday.祈使句的用法主語(yǔ)是you常省去，動(dòng)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(méi)關(guān)系。SummaryBeagoodstudent.HomeworkTrytowritedownatleastfive

sentencesaboutyourfamilyrules.1.Don’twaste(浪費(fèi))water.7.Don’treadinbed.2.Makethebedeveryday.3.Washyourh