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初中英语语法几大基本时态讲与练(2)

发布时间:2016-02-29  编辑:查字典英语网小编

  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 isnt 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、 Dont talk here. My mother _____.

  A. is sleeping B .are sleeping C. sleeping D .sleep

  4 、Danny ______. Dont call him.

  A. is writeing B .is writing C.writing D .writes

  5 、When_____he_____back?

   Sorry, I dont know.

  A. does,come B.are coming C.is come D.is coming

  答案:A C A B D

  (二)、填空

  1、 Its ten oclock. 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 Mingisnt read ( not read) a book in bed now.

  答案:1 are flying 2 isnt 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。

  

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