【題目】The 4G mobile phone has a great effect on people’s life since it _______ .

A.inventsB.inventedC.is inventedD.was invented

【答案】D

【解析】

句意：自從4G手機(jī)發(fā)明以來(lái)，它極大地影響了人們的生活。

考查動(dòng)詞時(shí)態(tài)和動(dòng)詞被動(dòng)語(yǔ)態(tài)。invents主動(dòng)一般現(xiàn)在時(shí)態(tài)；invented主動(dòng)過(guò)去時(shí)態(tài)；is invented一般現(xiàn)在時(shí)被動(dòng)結(jié)構(gòu)；was invented一般過(guò)去時(shí)態(tài)被動(dòng)結(jié)構(gòu)；根據(jù)句中的since自從……可知，后面要接過(guò)去時(shí)態(tài)的句子或過(guò)去的時(shí)間點(diǎn)。而句子主語(yǔ)與動(dòng)作之間是被動(dòng)關(guān)系，所以應(yīng)該用被動(dòng)語(yǔ)態(tài)，結(jié)構(gòu)是“助動(dòng)詞be＋及物動(dòng)詞的過(guò)去分詞”，一般過(guò)去式的被動(dòng)語(yǔ)態(tài)構(gòu)成was/ were＋done，故選D。

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