是a unusual还是an unusual

是a unusual还是an unusual 是a unusual还是an ununusal? most an unusual 还是 a most unusual AMAZING UNUSUAL的前面是A还是AN 是a upset boy 还是 an upset boy还有是a unusual lady还是an unusual lady? 单词“unusual”前应填a,还是an unusual前面用a还是an,alien前面用a还是an （an）unusual experience 而不是a 元音字母和元音因素?u是元音字母 但不是元音因素为什么是 a university .而又是 an unusual day.到底 u 开头的 词用 a 还是 an?谢谢回答```` 关于英语作文“an unusual thing”、急~“an unusual experience”等于“an unusual thing”吗一做题目是“an unusual experience”内容大概是一个小孩子掉河里了、然后警察什么的过来救他、可以用“an unusual 为什么unusual前用a而useful前用an usually unusual前面加 分别加什么( a an) 是a还是an I had a very unusual experience on sunday.和He had an unusual experience last weekend两个句子为什么 It is____ work of art that everyone wants to have a look at it.A a so unusA a so unusual B such an unusual C so unusual D such unusual 请解析 Can we find ____ before an earthquake?Can we find ____ before an earthquake?----Yes,some animals will run away .横线上填something unusual还是anything unusual . He is ____ unusual basketball player.A.a B.an C./ D.of 英语语法题（20）It is ____work of art that everyone wants to have a look at it.A.so unusual B.such unusualC.such an unusual D.so an unusual答案+思路,3Q