首页 > 留学知识库

问题: 语法题

More middle-aged persons suffer from heart trouble than ( )realized.

A.most people B.that people C.what generally

D.is generally

解答:

More middle-aged persons suffer from heart trouble than (D )realized.
A.most people B.that people C.what generally
D.is generally
这道题考查省略。省略掉的成分只可以是与句子主语意思一致的第二次出现的主语,比如it is。后面的realized只可能是过去分词而不可能是过去式,因为前面用的是suffer,是现在时。所以后面应该用be done的结构。只有D合选。检验一下,ABC都有问题。时态不对。C少了一个is.

参考文献:http://blog.sina.com.cn/calendula28