一般现在时.ppt三年级

复习•人称代词•主语•时态•一般现在时的含义•be动词在一般现在时中的用法•实义动词在一般现在时中的用法句子结构1.肯定句当主语为第一人称，第二人称和第三人称复数时：主语+实义动词原形+其他eg:YouspeakEnglish.当主语为第三人称单数时：主语+实义动词单三+其他eg:ShespeaksEnglish.2.动词第三人称单数的变化规则•一般情况下，在动词后直接加s.•以e结尾的动词，在词尾直接加s.•以s,x,ch,sh,o结尾的动词，在词尾加es.以辅音+y结尾的动词，把y变为i,再加es.练习standplaylikegodancedrawwritetidycatchhelpflytouchtakedostandsplayslikesgoesdancesdrawswritestidiescatcheshelpsfliestouchestakesdoes3.一般疑问句当主语为第一，二称，或第三人称复数时：Do+主语+动词原形+其他肯定回答Yes,主语+do否定回答No,主语+donotdonot=don'teg:DoyouspeakEnglish?Yes,Ido.No,Idon't.当主语为第三人称单数时：Does+主语+动词原形+其他肯定回答Yes,主语+does否定回答No,主语+doesnotdoesnot=doesn'teg:DoesshespeakEnglish?Yes,shedoes.No,shedoesn't.4.否定句当主语为第一，二称，或第三人称复数时：主语+don't+动词原形+其他eg:Youdon'tspeakEnglish.当主语为第三人称单数时：主语+doesn't+动词原形+其他eg:Shedoesn'tspeakEnglish.根据图画利用所学的一般现在时造句。JimplayscomputergameseveryMonday.JimPlaycomputergameseveryMondayheplaybasketballeverySaturdayHeplaysbasketballeverySaturday.TheygoshoppingeverySunday.theygoshoppingeverySundayTheboyplayfootballWednesdayTheboyplaysfootballonWednesday.作业•一般现在时练习