朗文英语WelcometoEnglish1BUnit4教学课件.ppt

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1、Unit4MoreaboutanimalsWalkingWalkingwordseatsleepfighthoprunswimWhataretheydoing?现在进行时定义：现在进行时表示现在正在进行或发生的动作。结构：主语be动词ving现在进行时的变化规则1.直接加ing.如：play+ing→playing.sing+ing→singing.2.去掉不发音的e+ing.如：write去e+ing→writing3.重读闭音节，以辅音字母+元音字母+辅音字母结尾的词，要双写尾字母再加ing。如：run+n+

2、ing→running.辅元辅给小鸡找妈妈danceswimsing+ing双写+ing去e+ingHeplayfootball.isingSheisreadingabook.Iamrunning.Listen!Thebirdissinging.TheywatchTV.areingThemanrunisning.Theboyswimisming.Theteacherwriteising.Theydanceareing.Guess:Whataretheydoing?Let’splayagame:Whoisthegu

3、essingchampion?Arethey+v-ing…?Isit/he/she+v-ing…?Whataretheydoingnow?Whatisthecatdoing?Whatisthecatdoing?What’sshedoing?Whataretheydoing?Whatisthebeardoing?GuessingGameWhatisthepigdoing?GuessingGameWhatistheboydoing?GuessingGameWhatisthegirldoing?PracticeHowm

4、any……arethere?Thereare……Whataretheydoing?Theyare……注意单数时句型的变化