19.在北京很多公共場(chǎng)所不允許吸煙.(allow)
Smokingisn't allowed in many public places of Beijing.

分析 isn't allowed.

解答 答案:isn't allowed.這里需要表達(dá)出不允許,所給單詞是allow允許,主語(yǔ)是smoking是allow的承受者,構(gòu)成被動(dòng)關(guān)系,再者這里是說(shuō)客觀事實(shí),用一般現(xiàn)在時(shí)的被動(dòng)語(yǔ)態(tài)am/is/are+過(guò)去分詞,主語(yǔ)是動(dòng)名詞smoking,謂語(yǔ)動(dòng)詞用單數(shù),加上not構(gòu)成否定,故答案是isn't allowed.

點(diǎn)評(píng) 這里是對(duì)被動(dòng)語(yǔ)態(tài)的考查,分詞主謂關(guān)系和時(shí)態(tài),確定用哪一時(shí)態(tài)的被動(dòng)語(yǔ)態(tài),這里要注意的是單個(gè)的動(dòng)名詞短語(yǔ)作主語(yǔ)謂語(yǔ)動(dòng)詞要用單數(shù)

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