what__encuraging speech this is!和 what__exciting news this is!为什么第1个可以填an,第二个不行?

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what__encuraging speech this is!和 what__exciting news this is!为什么第1个可以填an,第二个不行?
what__encuraging speech this is!和 what__exciting news this is!
为什么第1个可以填an,第二个不行?

what__encuraging speech this is!和 what__exciting news this is!为什么第1个可以填an,第二个不行?
speech是个单数名词,所以前面要不定冠词,encouraging以元音开头,所以用an.
news为不可数名词,不能用不定冠词.

因为news是不可数名词,所以前面不能加不定冠词

首字母的发音,是音标是元音,而不是字母是元音字母

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