是a upset boy 还是 an upset boy还有是a unusual lady还是an unusual lady?

是a upset boy 还是 an upset boy还有是a unusual lady还是an unusual lady? _____American boy是填a还是an 是 a honest boy 还是 an honest boy 是a honest boy 还是an honest bony a 8 boy还是an 8 boy 看是a还是an数字要转化成英文吗吗 是a one-year-old boy还是an one-year-old boy u开头的单词前面是a还是an Active boy前面加a还是an boy的前面加an还是a an ugly boy 正确,还是a ugly boy 正确 A little boy writes____u and ____n.A.a,an B.an,a C.an,an为什么选A? 字母u前面用a还是an u前面加a还是an u前面加a还是an u前面加a还是an 英语there is __ u in university.是填a还是an?字母u前何时加an?请举例说明。 我们都知道是an unbrella那如果单单字母U前用a还是an? A,E,I,O,U加引号,前面A还是AN比如“0”,前面是A,E,I,O,U加引号前面A还是AN