新概念第一册,第29课第30课,英语课件Lesson29Lesson30

WhatmustIdo?windowcasebookcoattieshirtwatchshoesstereoTVlighttapfloorkitchenlivingroomfridgeblackboardelectriccookertableshelfcupboardcupglassboxbooknewspapermagazineknifekniveswardrobeendtabledressingtableclothesHowmustAmycleanthefloor?Sweepthefloor.Mrs.JonesAmyuntidy:在一个形容词的前面加上前缀“un”能够把这个形容词构成它的反义词tidyuntidycleanuncleanbusyunbusyhappyunhappy______must•1.must表示必须，应该；它的否定回答用needn’t/don’thaveto.•A:MustIfinishtheworkbeforesix？•B:Yes,youmust.•No,youneedn’t/don’thaveto.•2.must的否定形式mustnot，表禁止、绝对不能。•Youmustn’tgettoschoollate.•Youmustn’tsmokeintheroom.•3.must后面动词跟原形。情态动词：表示说话人对某一动作或状态的态度，或表示主观设想。1.Shemustathome.(be)2.WhenmustAmy____thefloor?(sweep)3.—Musttheycleantheclassroomnow?—No,theyAcan’tBneedn’tCdon’tDmustn’tbesweepBWhatmustAmydo？open/shut:turnon/turnoff:thestereo!thetap!magazinelightbookturnon/turnoffturnon/turnoffturnon/turnoffopen/shutopen/shut一般是指关上或者切断电源或水龙头一般是指一个物件的门或者封面之类的东西Thenputtheseclothesinthewardrobe.Putsomesugarinthecoffee.ABCDEEDABCOpen…andair…Thenput…in…1)2)3)Thenmake…4)Dust…5)Sweep…Keyphrases:穿上：脱掉：开（灯）：关（灯）：putontakeoffturnonturnoff情态动词：must后接动词原形句型：祈使句Homework1.背诵课文Lesson292.听写单词3.完成练习册