Oil prices have risen________32 percent since last year,________a record $84.65 a barrel on Nov.9.
A.by;reachedB.by;reachingC.by;to reach D.to;reaching
B

試題分析:考察介詞和分詞做狀語(yǔ)。第一空中的介詞by表示程度,rise by 32 percent上升了百分之32;介詞to表示程度;第二空的現(xiàn)在分詞doing與句子主語(yǔ)oil price構(gòu)成主動(dòng)關(guān)系,在句中做結(jié)果狀語(yǔ),表示的是意料之中的結(jié)果。句意:自從去年以來(lái),油價(jià)上升了百分之32,在11月9日達(dá)到了$84.65 a barrel。故B正確。
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)。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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