1、把動(dòng)詞變成現在分詞形式易出錯。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(dòng)詞變現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結尾y來(lái)替。

B、動(dòng)詞現在分詞的變化規則要與名詞變復數、動(dòng)詞變現單三等規則區分開(kāi)來(lái)。

2、謂語(yǔ)部分的構成不完整：丟掉be動(dòng)詞，或忘記把動(dòng)詞變成現在分詞。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：現在進(jìn)行時(shí)的謂語(yǔ)部分的構成是"be+現在分詞"，二者缺一不可，這一點(diǎn)必須要牢記。

3、對動(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.(對劃線(xiàn)部分提問(wèn))

→誤：What are the students in the room?

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

解析：現在進(jìn)行時(shí)態(tài)中對動(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、現在進(jìn)行時(shí)態(tài)的謂語(yǔ)部分是并列結構時(shí)，容易忽視第二個(gè)以及第二個(gè)以后的動(dòng)詞用現在分詞形式。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(gè)并列成分，動(dòng)詞形式須一致。

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