19.Unfortunately,by the time I got there,the bus ______.( 。
A.had leftB.have leftC.leftD.is leaving

分析 不幸的是,當(dāng)我到那的時(shí)候,公車已經(jīng)離開(kāi)了.

解答 答案:A.
結(jié)合句意get和leave兩個(gè)動(dòng)作,leave先發(fā)生,也就是過(guò)去的過(guò)去,故用過(guò)去完成時(shí)had+過(guò)去分詞,leave的過(guò)去分詞left,故答案是A.

點(diǎn)評(píng) 過(guò)去完成時(shí)表示過(guò)去某一時(shí)間或動(dòng)作以前已經(jīng)發(fā)生或完成了的動(dòng)作對(duì)過(guò)去的某一點(diǎn)造成的某種影響或是結(jié)果,用來(lái)指在另一個(gè)過(guò)去行動(dòng)之前就已經(jīng)完成了的事件.它表示動(dòng)作發(fā)生的時(shí)間是"過(guò)去的過(guò)去",側(cè)重事情的結(jié)果.

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