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There is______ “u” and ______ “s” in the word “use”.
A.a; a B.an;aC.an; anD.a; an
D

试题分析:字母u的词首音素是辅音,故不定冠词用a。字母s的词首音素是元音,故不定冠词用an,选D。
点评:冠词是一种虚词,一般用于名词前面表示特指或者泛指某一个。冠词的应用都用一定规则,熟记这些规则是解题的关键。需注意的是不定冠词的用法是看词首音素,不是看首字母,如:useful首字母是元音,但是词首音素时辅音,故不定冠词用a;hour首字母是辅音,但是词首音素是元音,故用冠词an。
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