Unit2NoRulesNoOrderSectionA3a-3d（課件）-人教版英語七年級下冊

Unit2NoRulesNoOrder3a-3d學(xué)習(xí)目標01通過觀察和閱讀，能夠總結(jié)祈使句和含有情態(tài)動詞的句子中的動詞的形態(tài)變化特點。020304通過討論，能夠歸納和掌握祈使句的句式結(jié)構(gòu)，意義和用法。。通過小組合作，能夠正確使用祈使句和情態(tài)動詞談?wù)搶W(xué)習(xí)和生活中的規(guī)則。通過對情態(tài)動詞的分辨，能夠根據(jù)語境，正確使用情態(tài)動詞can、must、haveto。Whatschoolrulesdoyouhave?LeadinWeartheschooluniform.Don’tuseyourphoneinclass.Don’tlitter.Keepyourschoolcleanandtidy.Bepoliteandtreateveryonewithrespect.Putupyourhandifyouwanttoaskyourteacheraquestion.SchoolRulesWalkinthehallway.Don’t

run!Don’tlitter!Youmustn’t/can’tlitter!SchoolRulesBepoliteandtreat

oneanotherwithrespect.Walkinthehallway.Don’trun!Bepoliteandtreatoneanotherwithrespect.Don’tlitter./Youmustn’tlitter./Youcan’tlitter.Canwebringourphonestoclass?No,wecan’t.Wemustkeeptheminourlockers.Canweeatsnacksinclass?No,wecan’teatinclass.Wehavetoeatinthedininghall.Readthesentences.Dotheverbsinboldneedtochangeforms?Why?3aImperativeSentencesWalkinthehallway.Bepoliteandtreatone

anotherwithrespect.Don’trun!Don’tlitter.祈使句ImperativeSentences祈使句Pleasegivemeahand.（請求）用于表達_________、_________、_________等語氣的句子。定義Comeinandwashyourhands.（命令）Bekindtoyourbrother.（建議）例句祈使句命令請求建議ImperativeSentences1通常省略主語，以動詞原形為開頭祈使句2為了讓祈使句聽起來比較客氣、委婉，可在句首或句末加上please3祈使句的否定一般在句首加don't或者No+動詞ing特點ImperativeSentencesDo型祈使句祈使句ImperativeSentencesClosethewindow.肯定句___________+賓語（+其他）.Don’tclosethewindow.否定句________+動詞原形（+其他）.動詞原形Don’tBe型祈使句祈使句ImperativeSentencesBecareful.肯定句_____+形容詞/名詞短語（+其他）.Don’tbelateforclass.否定句________+形容詞/名詞短語（+其他）.BeDon’tbeLet型祈使句祈使句ImperativeSentencesLethimcomein.肯定句Let+賓語+_________（+其他）.Don’tlethimcomein.否定句________+賓語+_________（+其他）.Don’tlet動詞原形動詞原形Let型祈使句祈使句ImperativeSentencesDon'tlethergo.否定句_______+let+賓語（+其他）.Don’tLethernotgo.Let+賓語+_______+動詞原形（+其他）.notNo型祈使句祈使句ImperativeSentencesNosmoking.No+_______/n.（通常表示“禁止……”，用于指示牌、布告等doingNoswimminginthelake.Walkinthehallway.Don’trun!Bepoliteandtreatoneanotherwithrespect.Don’tlitter./Youmustn’tlitter./Youcan’tlitter.Canwebringourphonestoclass?No,wecan’t.Wemustkeeptheminourlockers.Canweeatsnacksinclass?No,wecan’teatinclass.Wehavetoeatinthedininghall.Readthesentences.Dotheverbsinboldneedtochangeforms?Why?3a1情態(tài)動詞沒有除了haveto之外，其余沒有人稱和數(shù)的變化2情態(tài)動詞后跟動詞原形3情態(tài)動詞不能單獨作謂語，必須和系動詞或?qū)嵙x動詞連用.常見的情態(tài)動詞有can、may、must、haveto、should、would等。特點情態(tài)動詞ModalVerbsModalVerbs情態(tài)動詞1.Wemustrespectourfriends.2.Wehavetowearuniformsatschool.must表達說話者主觀的看法、信念或強烈的建議，常用于表達個人的決心、義務(wù)感或內(nèi)在的驅(qū)動力。haveto強調(diào)由于外部的客觀情況、規(guī)定、事實等因素，導(dǎo)致不得不做某事，并非完全出于個人意愿。例句Standup.Sitdown.Takeaseat.Openyourbook.Raiseyourhands.Clapyourhands.Useyourpen.Isay,youdo.GameTimeLookattheblackboard概念祈使句一般用來表示示______、______、______、_____、_____、________等。ImperativeSentence（祈使句）1祝愿TurnofftheTV,please.請求建議勸說禁止Goandwashyourhands.Let'splaybasketball.Bepolitetoyourclassmates.Haveagoodday!Nosmoking!注意事項: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。命令Walk

inthehallway.Don’trun！Bepoliteandtreatoneanotherwithrespect.Don'tlitter./Youmustn'tlitter./Youcan'tlitter.Canwebringourphonestoclass?No,wecan't.Wemustkeeptheminourlockers.Canweeatsnacksinclass?No,wecan'teatinclass.Wehavetoeatinthedininghall.No,theydon’t.Becausetheverbsappearinimperativesentences（祈使句）oraftermodalverbs（情態(tài)動詞）.Dotheverbsinboldneedtochangeforms?Why?3aNoclimbing.Nosmoking.Nopets.Nonoise.Read,observe,andtry.?Donoteatordrink.?Noeatingordrinking.?Youcan’t/mustn’teatordrink.No+doing.3cWritetherulesfortheothersigns.?Donotparkhere.?Noparking(here).?Youcan’t/mustn’tpark(here).?Donottakephotos.?Nophotos.?Youcan’t/mustn’ttakephotos.3cThankyou！3cWritetherulesfortheothersigns.?Donotswim.?Noswimming.?Youcan’t/mustn’tswim.?Donotfeedthebirds.?Nofeed