题目内容

8.It ________ about eight minutes for sunlight (阳光) to travel from the sun to the earth.(  )
A.takesB.spendsC.costsD.pays

分析 阳光从太阳到达地球大约需要八分钟的时间.

解答 答案:A   观察句子,it放在开头作为形式主语,其真正的主语是动词不定式,再联系句意,可知应该用 it takes sb…to do sth句型,指花费多少时间做某事.而其他选项的词虽然都与花费有关,但都不能用it作形式主语表花费.又由于此句说的是客观事实,所以应该用一般现在时,主语是it,所以谓语动词应该用take的第三人称单数形式为takes,故选A.

点评 此题一是考察基本句型 it takes sb…to do sth的用法;二是考察一般现在时当主语是第三人称单数的用法,要注意谓语动词的变化.

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