_________computer games too much is bad for your eyes
问题描述：
_________computer games too much is bad for your eyes
A.To play B.Play C.Playing
why
答
C.Playing 是动名词,它既可以作主语,又可以有它的的宾语；
A.To play 是动词不定式,它同样既可以作主语,又可以有它的的宾语.不过动词不定式做主语的时候,最好前用It以形式主语代替,“It is bad for your eyes to play computer games too much.”否则整个句子显得头重脚轻,不是地道的英语.
这二个答案都对,但 C.Playing 为首选.