大家好，我是小跳，我来为大家解答以上问题。现在进行时的标志词，现在进行时的结构很多人还不知道，现在让我们一起来看看吧！
1、作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。
2、现在进行时表示现在（说话的瞬间）正在进行或发生的动作，强调“此时此刻”。
3、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。
4、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。
5、E.g I am coming.其结构为be+现在分词. 现在分词的变法有一般在动词词尾加上-ing ,e..g. jump2、以不发音字母e结尾的动词，先去e，再加-ing. E.g have write3、.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。
6、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。
7、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：专项训练：一 、单选 Look! He _____their mother do the housework.A. is helping B. are help C. is help D.is helpping2 、_____are the boys doing They are singing in the room.A .Who B .How C.What D.Where3、 Don’t talk here. My mother _____.A. is sleeping B .are sleeping C. sleeping D .sleep4 、Danny ______. Don’t call him.A. is writeing B .is writing C.writing D .writes5 、–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 It’s ten o’clock. My mother _____(lie)in bed.2、 What____he _____(mend)3、 We _____(play)games now.4、 What ____you____(do) these days5、 ____he ___(clean) the classroom6、 Who____(sing)in the next room7 、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：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。
8、二 丢掉be动词或忘记把动词变成现在分词例： 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”。
9、这一点必须牢记。
10、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。
11、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。
本文到此讲解完毕了，希望对大家有帮助。