1、把動(dòng)詞變成現(xiàn)在分詞形式易出錯(cuò)。例：

　�。�1）誤：They are swiming (swim) .

　　正：They are swimming (swim).

　�。�2）誤：Jenny is plaiing (play) football.

　　正：Jenny is playing (play) football.

　　解析：A、動(dòng)詞變現(xiàn)在分詞可有如下口訣:一般-ing；啞e先去e；重閉單輔先雙寫(xiě)；-ie結(jié)尾y來(lái)替。

　　B、動(dòng)詞現(xiàn)在分詞的變化規(guī)則要與名詞變復(fù)數(shù)、動(dòng)詞變現(xiàn)單三等規(guī)則區(qū)分開(kāi)來(lái)。

　　2、謂語(yǔ)部分的構(gòu)成不完整：丟掉be動(dòng)詞，或忘記把動(dòng)詞變成現(xiàn)在分詞。例：

　　（1）誤：Look! Two children flying (fly) a kite in the park.

　　正：Look！Two children are flying (fly) a kite in the park.

　　（2）誤：Li Ming isn't read ( not read) a book in bed now.

　　正：Li Ming isn't reading ( not read) a book in bed now.

　　解析：現(xiàn)在進(jìn)行時(shí)的謂語(yǔ)部分的構(gòu)成是"be+現(xiàn)在分詞"，二者缺一不可，這一點(diǎn)必須要牢記。

　　3、對(duì)動(dòng)詞或動(dòng)詞詞組提問(wèn)時(shí)，丟掉代動(dòng)詞doing。例：

　　The students are singing in the room.(對(duì)劃線部分提問(wèn))

　　→誤：What are the students in the room?

　　→正：What are the students doing in the room?

　　解析：現(xiàn)在進(jìn)行時(shí)態(tài)中對(duì)動(dòng)作提問(wèn)可記住此句式"What +be +主語(yǔ)+doing+其它?"或簡(jiǎn)寫(xiě)為"What......doing......? "句式。

　　4、現(xiàn)在進(jìn)行時(shí)態(tài)的謂語(yǔ)部分是并列結(jié)構(gòu)時(shí)，容易忽視第二個(gè)以及第二個(gè)以后的動(dòng)詞用現(xiàn)在分詞形式。例：

　　孩子們?cè)谂苓�是在跳？

　　誤：Are the children running or jump?

　　正：Are the children running or jumping?

　　解析: or連接的是兩個(gè)并列成分，動(dòng)詞形式須一致。
 

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