是 a umbrella还是an umbrella,为什么?

是 a umbrella还是an umbrella,为什么? ( )blue umbrella ( )里是填a还是an? a white umbrella 还是 an white unbrella? uniform 前加的是a还是an ,哪umbrella 呢 I have_____beautiful umbrella 括号里是加a还是an make it look like an umbrella.是look,还是looks? 译成汉语：She told me her parents many years ago I took a bus ti school on a rainy day.There were few people on the bus.Suddenly,I found an umbrella.Ifound the telphone number of the owner's on ite scrolls.I called the owner and gave her the umb 英语翻译responsability和disponsability 你们可以参考下文:i'm raffaele russomando from italy owner of a bijoux,accessories and umbrella shops.i would like to known some information about your products.i need an offer for 540 pcs of you umb 当元音开头的名词被形容词修饰时,其冠词是用an还是a啊?像 an umbrella 和 —beautifu umbrella .其冠词根据什么定啊? Yesterday my sister bought ____ the one your sister bought last month.A.as beautiful an umbrella as B.so beautiful an umbrella asC.as a beautiful umbrella as D.so a beautiful umbrella as 答案怎么是A呢？ 字母u前用a还是an?There is ___ u in the word umbrella.用a还是an? （ ）umbrella.用a或an填空 According to( ) ancient legend ,Gong invented the umbrella.是填an还是填the It's going to rain._____take an umbrella with you?A.Let'sB.Why notC.You'd betterD.nobody答案是B还是C? 求问university 和umbrella为什么一个前面是a,一个是an? We have an umbrella.否定：（ ） A.We don't haveWe have an umbrella.否定：（ ）A.We don't have an umbrella.B.We don't have umbrella.C.We haven't an umbrella.D.We have no umbrella. have you seen an umbrella here? ____black one?it was here minutes ago.这个空该填a还是the? 把This ia an umbrella.This is a William's umbrella.This ia aWilliam's black umbrella改为特殊疑问句