语法区几乎无人解答，搬过来看看 [求助]10月JJ -17

shazhi

[求助]10月JJ 17
17．还有一道sc
a)These days many places are facing pollution problems: some places are..., some places are .... and some places are... .   
b)These days many places are facing pollution problems as some places are..., some places are .... and some places are... .

考的是as 和冒号， 省略号里是说某些地方被什么污染等等。


请教，as 和冒号用法有什么不同？


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as 不能用作举例，要用也应该是SUCH AS.

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哪是不是用冒号，后面举例就没有问题了？

祈晴坊主

我感觉用冒号好

因为本题的意思是列举

而如果比用了AS，就好象是前面的many places are facing 和后面的some places are做比较了

有歧义


而且AS没有冒号简洁