When shopping, keep your eyes ______for those energy-saving machines.
A.openedB.openC.to openD.to be open
B

試題分析:當(dāng)購(gòu)物時(shí),睜大你的眼睛看看這些節(jié)能機(jī)器。Open是瞬間動(dòng)詞,不能表示持續(xù)性動(dòng)作,故本句中open用作形容詞開(kāi)著的,做賓語(yǔ)補(bǔ)足語(yǔ),選B。
點(diǎn)評(píng):英語(yǔ)單詞的一個(gè)特點(diǎn)就是一詞多義,一詞多性,即一個(gè)單詞可以有多個(gè)不同詞性的用法。因此我們首先要詳細(xì)了解這些單詞作為不同詞性的含義及用法,尤其注意其比較特殊的用法,然后結(jié)合語(yǔ)境選擇正確答案。
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