题目内容
4．---_______ great fun chatting with others online is!---Really？But it is bad for our eyes．（ ）
| A． | What a | B． | How a | C． | What | D． | How |
分析 --与其他人在线聊天是多么有趣的事啊！
--真的吗？但是它对我们的眼睛有坏处．
解答 答案：C．根据great fun chatting with others online is!可知这里考查了感叹句，本句的中心词是great fun，fun在这里是一个不可数名词，great是一个形容词，在这里修饰fun，根据感叹句的结构：What+（形容词）+可数名词复数或不可数名词+主语+谓语．故选C．
点评 本题考查了感叹句的用法．解答时注意感叹句的常用句型：1．What+a（an）+（形容词）+单数可数名词+主语+谓语!2．What+（形容词）+可数名词复数或不可数名词+主语+谓语!3．How+形容词（副词）+主语+谓语!
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