17.---Why were you so late for work today?
---        to the office was very slow this morning because of the traffic.( 。
A.DrivingB.I droveC.To driveD.That I drove

分析 -為什么你今天遲到了?
-因?yàn)榻煌ǜ叻迤冢择{車去辦公室是很慢的.

解答 答案:A.
本題中的動(dòng)名詞driving to the office做為句子的主語(yǔ),動(dòng)名詞做主語(yǔ)指經(jīng)常性,習(xí)慣性的行為.B項(xiàng)不能做主語(yǔ);C項(xiàng)不定式做主語(yǔ)是指一次性的行為;D項(xiàng)是主語(yǔ)從句做主語(yǔ),但是意思不匹配.故選A.

點(diǎn)評(píng) 動(dòng)名詞做主語(yǔ)表示經(jīng)常性,習(xí)慣性的動(dòng)作.如果是單個(gè)的動(dòng)名詞做主語(yǔ),謂語(yǔ)動(dòng)詞用單數(shù)形式.

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