初中英语语法几大基本时态讲与练(2)
http://www.newdu.com 2025/09/15 10:09:28 新东方 佚名 参加讨论
大家知道,谓语的动词用来表示动作(情况)发生时间的各种形式称为时态。 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。 尽管现在进行时比较简单,但在做题过程中也常会犯一些错误,常见的错误有如下几种: 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 the room.(对划线部分提问) What are the students in the room? 答案:What are the students doing in the room? 解析:现在进行时态中对动作提问可记住此句式“What +be +主语+doing+其它?” 或简写为“What......doing......”?句式。 四、现在进行时态的选择疑问句中易忽视or后用现在分词形式 例:孩子们在跑还是在跳? Are the children running or jump? 答案:Are the children running or jumping? 解析: or连接的是两个并列成分,动词形式须一致。 (责任编辑:admin) |
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