1、把動詞變成現(xiàn)在分詞形式易出錯。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;-ie結(jié)尾y來替。

B、動詞現(xiàn)在分詞的變化規(guī)則要與名詞變復數(shù)、動詞變現(xiàn)單三等規(guī)則區(qū)分開來。

2、謂語部分的構(gòu)成不完整：丟掉be動詞，或忘記把動詞變成現(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)在進行時的謂語部分的構(gòu)成是"be+現(xiàn)在分詞"，二者缺一不可，這一點必須要牢記。

3、對動詞或動詞詞組提問時，丟掉代動詞doing。例：

The students are singing in the room.(對劃線部分提問)

→誤：What are the students in the room?

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

解析：現(xiàn)在進行時態(tài)中對動作提問可記住此句式"What +be +主語+doing+其它?"或簡寫為"What......doing......? "句式。

4、現(xiàn)在進行時態(tài)的謂語部分是并列結(jié)構(gòu)時，容易忽視第二個以及第二個以后的動詞用現(xiàn)在分詞形式。例：

孩子們在跑還是在跳?

誤：Are the children running or jump?

正：Are the children running or jumping?

解析: or連接的是兩個并列成分，動詞形式須一致。

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