小学英语作文：现在进行时与过去进行时概述
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小学英语作文：现在进行时与过去进行时概述 现在实行时 现在实行时的用法： 其结构是助动词be的过去形式is/are/am +v-ing. 其句式变化仍然要在be上做文章。 现在(说话的瞬间)正在实行或发生的动作，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实行的动作。E.g. They are working these days. 3、某些动词的现在实行时，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。 4. 习惯实行：表示长期的或重复性的动作，说话时动作未必正在实行。 Mr. Green is writing another novel. (说话时并未在写，只处于写作的状态。) She is learning piano under Mr. Smith. 5. 表示渐变的动词有：get, grow, become, turn, run, go, begin等。 The leaves are turning red. It's getting warmer and warmer. 6.与always, constantly, forever 等词连用，表示反复发生的动作或持续存有的状态，往往带有说话人的主观色彩。 You are always changing your mind. 典型例题 My dictionary ___, I have looked for it everywhere but still___ it. A. has lost, don't find B. is missing, don't find C. has lost, haven't found D. is missing, haven't found. 答案D. 前句是一个仍在持续的状态，应用实行时，因为没有找到，其影响仍然存有，应用完成时，瞬间动词用于否定式时可用于完成时。 不用实行时的动词 1) 事实状态的动词 have, belong, possess, cost, owe, exist, include, contain, matter, weigh, measure, continue I have two brothers. This house belongs to my sister. 2) 心理状态的动词 Know, realize, think see, believe, suppose, imagine, agree, recognize, remember, want, need, forget, prefer, mean, understand, love, hate I need your help. He loves her very much. 3 ) 瞬间动词 accept, receive, complete, finish, give, allow, decide, refuse. I accept your advice. 4) 系动词 seem, remain, lie, see, hear, smell, feel, taste, get, become, turn You seem a little tired. (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：现在实行时肯定句的结构规律为： “be+现在分词,缺一不可”。这个点必须牢记。 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：现在实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、现在实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。 本文来源：https://www.wddqw.com/doc/bf2008f1a68da0116c175f0e7cd184254b351b6a.html