初中英語语法现在进行时.doc

初中英语语法—现在进行时讲解与习题 　 　　现在进行时表示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 reading . They are talking 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. They are working these days. 　　3、某些动词的现在进行时，表预定的计划或即将发生的动作。E.g I am coming. 　　其结构为be+现在分词. 现在分词的变法有 　　1、一般在动词词尾加上-ing ,E.g. jump 　　2、以不发音字母e结尾的动词，先去e，再加-ing. E.g have? write 　　3、.以重读闭音节末尾只有一个辅音字母结尾的词，它前面是单个元音字母时要先将词尾的辅音字母双写，再加上-ing. E.g. sit put 　　其句式变换都在be上做文章。 　　E.g. He is buying a bike. 　　Is he buying a bike? 　　He isn’t buying a bike. 　　一般由look,listen,now, at this moment等时间状语做标志。 　　　　自我检测 　　（一） 、单选 　　1、 Look! He _____their mother do the housework. 　　A. is helping???? B. are help???? C. is help??? D.is helpping 　　2 、_____are the boys doing ? They are singing in the room. 　　A .Who??????????? B .How????????? C.What???????? D.Where 　　3、 Don’t talk here. My mother _____. 　　A. is sleeping??? B .are sleeping? C. sleeping??? D .sleep 　　4 、Danny ______. Don’t call him. 　　A. is writeing??? B .is writing??? C.writing????? D .writes 　　5 、–When_____he_____back? 　　– Sorry, I don’t know. 　　A. does,come?????? B.are coming??? C.is come??? D.is coming 　　答案：A? C? A? B? D 　　（二）、填空 　　1、 It’s ten o’clock. My mother _____(lie)in bed. 　　2、 What____he _____(mend)? 　　3、 We _____(play)games now. 　　4、 What ____you____(do) these days? 　　5、 ____he ___(clean) the classroom? 　　6、 Who____(sing)in the next room? 　　7 、The girl____(like)wearing a sweater. Look! She ____(wear)a red sweater today. 　　答案：1 is lying?? 2 is mending?? 3? are playing? 4 are doing 　　5 Is cleaning? 6 is singing? 7 likes ;? is wearing 　　一、把动词变成现在分词形式易出错 　　例：1、They are swiming.(swim) 　　2 、Jenny is plaiing(play)football. 　　答案：1.swimming????? 2 .playing 　　解析：动词变现在分词可有如下口诀:“一添一去y不变”. “一添”指双写规则；“一去”指去掉不发音字母e规则；“y不变”指要与名词变复数区分开。 　　二、丢掉be动词或忘记把动词变成现在分词 　　例：1、 Look,two children flying.(fly) a kite in the park. 　　2 、Li Mingisn’t read ( not read) a book in bed now. 　　答案：1 are flying? 2 isn’t reading 　　解析:现在进行时肯定句的结构规律为: “be+现在分词,缺一不可”。这一点必须牢记。 　　三、对动词或动词词组提问时丢掉doing 　　例：1 、The students are singing in th