________ repeatedly, the problem still appeared in the beginners’ homework.


  1. A.
    Explaining
  2. B.
    Having explained
  3. C.
    Having been explained
  4. D.
    To be explained
C
試題分析:考察分詞作狀語(yǔ)。本題中的動(dòng)詞explain與后面句子主語(yǔ)the problem之間構(gòu)成被動(dòng)關(guān)系,故使用過(guò)去分詞done表示被動(dòng),在很多情況下done="having" done;前者更多強(qiáng)調(diào)被動(dòng),后者更多強(qiáng)調(diào)已經(jīng)完成。句意:已經(jīng)被重復(fù)地多次解釋,這個(gè)問(wèn)題還是出現(xiàn)在初學(xué)者的家庭作業(yè)里。故C正確。AB項(xiàng)沒(méi)有被動(dòng)的形式,D項(xiàng)中的不定式表示的是將來(lái)時(shí)。
考點(diǎn):考察分詞作狀語(yǔ)
點(diǎn)評(píng):當(dāng)分詞做狀語(yǔ)的時(shí)候,如果構(gòu)成分詞的動(dòng)詞與句子的主語(yǔ)構(gòu)成主動(dòng)關(guān)系,就使用現(xiàn)在分詞做狀語(yǔ);當(dāng)二者構(gòu)成被動(dòng)關(guān)系,使用過(guò)去分詞做狀語(yǔ)。在很多情況下done="having" done;前者更多強(qiáng)調(diào)被動(dòng),后者更多強(qiáng)調(diào)已經(jīng)完成。如果分詞的動(dòng)作發(fā)生在謂語(yǔ)動(dòng)詞之前,就使用分詞的完成式。如果分詞與句子的主語(yǔ)沒(méi)有關(guān)系,可以使用狀語(yǔ)從句或者獨(dú)立主格結(jié)構(gòu)。
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