我想知道一杯水英文是A glass of water为什么要加of

我想知道一杯水英文是A glass of water为什么要加of 想酒店服务员给你一杯水 A.Pass me a glass of water.B.I want a glass of water,please.根据情景提示,选择正确答案. 与a glass of water类似格式a piece of news一则新闻 a cup of water一杯水 a cup of tea一杯茶类似格式的10个 “一杯酸奶”用英语怎么说? a glass of yogurt 这样翻译对吗? this is a glass of milk 这句话对吗?我是从录音带听的,所以不知道到底有没有“a”.是this is a glass of milk 还是this is glass of milk a glass of orange ( )a glass of beer a glass of 英语翻译 a glass of coke a glass of a glass of 意思 是a pair of glass 还是a pair of glasses 是A cup of还是A glass of ,第五题 a glass of w什么 I_______want a glass of coffee a glass of.怎么读 给雪人照相 英文我知道是take a photo of a snowman但是我想问的是能不能换成 take a photo of the snowman,为什么? There's a glass of orange on the table.(对划线部分提问)划线部分是：a glass of orange