52. According to a recent study of consumer spending on prescription medications, increases in the sales of the 50 drugs that were advertised most heavily accounts for almost half of the $20.8 billion increase in drug spending last year, the remainder of which came from sales of the 9,850 prescription medicines that companies did not advertise or advertised very little. (A) heavily accounts for almost half of the $20.8 billion increase in drug spending last year, the remainder of which came (B) heavily were what accounted for almost half of the $20.8 billion increase in drug spending last year; the remainder of the increase coming (C) heavily accounted for almost half of the $20.8 billion increase in drug spending last year, the remainder of the increase coming (D) heavily, accounting for almost half of the $20.8 billion increase in drug spending last year, while the remainder of the increase came (E) heavily, which accounted for almost half of the $20.8 billion increase in drug spending last year, with the remainder of it coming
以我的理解,C选项逗号后面the remainder of the increase coming...不是一个完整的句子,coming是分词形式,不能做谓语啊但是对于选项B OG 又说了因为有分号,所以表示后面应该为完整的clause。
现在有点糊涂了,对于逗号后面的句子什么时候是clause,什么时候不是,不是的话是做modifier吗?
|