人教版七年级英语上册一般现在时ppt课件.pptx

一般现在时一般现在时一般现在时一般现在时概念概念标志词标志词常见用法常见用法基本结构基本结构概概 念念 一般现在时（simple tense），可以表示现在的状态，也可以表示经常的或习惯性的动作，还可以表示主语具备的性格和能力等习惯性习惯性真理性真理性动作发生的频率规律性规律性经常性经常性事物存事物存在的在的状态状态标志词标志词every dayevery Sundayon Sundaysoftenalwaysusuallysometimes例如：I have breakfast every day.常见用法常见用法1.现在时刻的状态、能力、性格、个性2.一般现在时表示将来 例如：Mary is a quiet girl，she likes white,and she can dance.The train leaves at 6:00 tomorrow morning.基本结构基本结构1.谓语是 be(am/is/are)2.谓语是实义动词3.谓语是情态动词+动词原形4.特殊疑问句肯定句主语+be+表语（形容词、名词）You are beautiful.一般疑问句否定句1.谓语为 be(am/is/are)时主语+be not+表语（形容词、名词）He isnt a doctor.Is/Are+主语+表语（形容词、名词）肯定回答：Yes,主语+be./否定回答：No,主语+be not.-Are you a player?-Yes,I am./No,Im not.肯定句主语+实义动词+宾语She has a little brother.一般疑问句否定句2.谓语为 实义动词（及物或不及物动词）时 情况构成方法读音例词一般情况加-s清辅音后读/s/浊辅音和元音后读/z/swim-swimshelp-helpslike-likes以辅音字母+o结尾的词加-es读/z/go-goesdo-does以s，sh，ch，x等结尾的词加-es读/iz/watch-watches，wash-washes以辅音字母+y结尾的词变y 为i再加es读/z/study-studies不规则变化have和be动词变have 为 has变be为am，is，are have-hasbe-am,is,are当主语是第三单时，谓语动词有下列几种变化形式肯定句主语+实义动词+宾语She has a little brother.一般疑问句否定句2.谓语为 实义动词（及物或不及物动词）时主语+dont/doesnt+实义动词原形+宾语She doesnt have a little brother.Do/Does+主语+实义动词原形+宾语肯定回答：Yes,主语+do/does.否定回答：No,主语+dont/doesnt.-Do you eat breakfast every morning?-Yes,I do./No,I dont.肯定句主语+情态动词+动词原形+宾语My parents can play piano.一般疑问句否定句3.谓语为 情态动词+动词原形主语+情态动词+not+动词原形+宾语Lisa cant speak Chinese.情态动词+主语+宾语肯定回答：Yes,主语+be./否定回答：No,主语+be not.-Can you swim?-Yes,I can./No,I cant.When is your birthday?How do you get to school?What can you do?4.特殊疑问句特殊疑问词+一般疑问句 改错（每题只有一处错误，请找出并改正）1.Is your brother speak English?2.Does he wants to go fishing?3.Johns brother like to play games after class.4.Mr.Wu teachs us English.5.She dont do her homework on Sundays.DoeswantlikesteachesdoesntSummary1.一般现在时的概念2.一般现在时的标志词3.一般现在时的常见用法4.一般现在时的基本结构谓语是 be(am/is/are)谓语是实义动词谓语是情态动词+动词原形特殊疑问句。