现在进行时讲义

1、现在进行时1、定义：表示现在（说话瞬间）正在进行的动作。2、使用情况：（1） 现在（说话的瞬间）正在进行或发生的动作，强调此时此刻E.g. He is read ing.They are talk ing now.（2）当前一段时间内的活动或现阶段正在进行的动作。E.g. He is teach ing in a primary school.They are work ing these days.3、现在进行时的基本结构及句型变化（1）结构：谓语动词结构：be（am, is, are）+ doing （现在分词）（2）现在进行时的句型变化:肯定句：主语+be+doing+其它.否定句：主语

2、+be+not+doing+其它.（be后加not）一般疑问句：be+主语+ doing +其它？ （ be动词提前）I肯定回答:Yes,主语+be.否定回答:No,主语+be+not.Eg： 肯定句 We are working. 否定句 We are not working. 一般疑问句 Are you working? 肯定回答 Yes, we are.否定回答 No, we aren t .Eg： 肯定句 He is watching TV now. 否定句 He is not watching TV now. 一般疑问句 Is he watchi ng TV now? 肯定回答Yes

3、, he is.否定回答 No, he isn t.Eg： 肯定句 Tom and Mike are playing football right now. 否定句 Tom and Mike aren t playing football right now. 一般疑问句 Are Tom and Mike playing football right now ? 肯定回答Yes, they are.否定回答 No, they arent.课堂练习：句型转换1. My parents are sleeping.变为一般疑问句)2. Sam is doing his homework right

4、now.变为否定句）3. Are you swimming?（变为肯定句）(3)动词ing变化规则情况变法例词一般情况直接加-ingplay-playi ngwalk-walki ng以不发音的字母e结尾的去e力口-ingcome-co minghave-havi ng动词make-mak ingride-rid ingwrite-writ ingtake-tak ing辅+元+辅”结构的动词将末尾辅音字母双与，putputt ingdrop-droppi ng,再力口 -ingswim swimmi ngstop stopp ingbeg in begi nningrun-running以i

5、e结尾的动词改ie为y，再力口 -ing。lie lyi ngdie dying.tie tyi ng.课堂练习:写出下列动词的现在分词形式worksingliestudy_havedanceshoptakemakelivegetgetbuystopbeg income4、现在进行时的特殊疑问句(1) 特殊疑问句结构：特殊疑问词+般疑问句语序(2) 现在进行时的特殊疑问句：特殊疑问词 +be(am/is/are)+主语+ doi ng+其它?例如： Mary is reading at home right now.Who is read ing at home right now?What is Mary doing at home right now?Where is Mary read ing right now?课堂练习:对划线部分提问1. My brother is playing football in the park.单选：-