再问GWD 14 -7（思路已有，请指正）

Q7:

A recent review of pay scales indicates that CEO’s now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times in 1980.

1. that CEO’s now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times
     
2. that, on average, CEO’s now earn 419 times the pay of blue-collar workers, a ratio that compares to 42 times
     
3. that, on average, CEO’s now earn 419 times the pay of blue-collar workers, as compared to 42 times their pay, the ratio
     
4. CEO’s who now earn on average 419 times more pay than blue-collar workers, as compared to 42 times their pay, the ratio
     
5. CEO’s now earning an average of 419 times the pay of blue-collar workers, compared to the ratio of 42 times

本题为什么不选A？CEO's 这是什么意思？它的意思是不是CEO's earn,这里earn 作名词不是动词？

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earn 应该是作为名词。

D/E 选项，宾语从句中缺少谓语动词，错误。

C/D选项，as compared to 用法错误。

A选项中，比较成分不对等-CEO's earn与blue-collar workers不独等。所以错误。

B项的结构为 宾语从句中没有完整的句子，是一个独立主格结构加上个同位语从句。

所以正确。

CEO'S就是CEO的复数形式，可以参看我上面这个unusual plural.

earn是动词.

TX for your reminding !

看了看好像 earn 的确应该是动词。这样更符合习惯，如果earn是动词，则CEO's应该是该名词的复数形式。

谁来给我讲讲A项为什么错啊？

我怎么觉得答案应该是A啊

B里的compares to 好像有问题啊，compare和base 一样 不是只能以-ed形式出现的吗？

上面说的A里的比较成分没有比对等啊，只不过blue-collars worker后面没有加 do助动词，这个应该不算错的。

请指点。。 

答案是C啊...

A: compared to比较对象不对等
B: a ratio that compares的compare不能用主动方式表达，应该是被比较
C: correct
D: 句子结构不对
E: 句子结构不对，应用宾语从句

另外我觉得GMAC对average做名词不喜欢...像A那样的，an average of它都要改成on average...