为何是three-legged desk而不是three-leg desk可有；连字符啊

为何是three-legged desk而不是three-leg desk可有；连字符啊 three-legged three-legged 的legged“three-legged 三条腿的” 这个合成词中leg本是一个名词 为什么要双写g 才加ed啊? ·three-legged-stool是什么意思? three legged -table中leg要加ed求大神帮助legged其实是一个独立的单词,表示有腿的,是一个形容词,因此和three组合成为three-legged三条腿的,仍然是一个形容词.这是百度的解释 那如果是500-word composition 什么叫three legged firewall?还有two legged firewall?有什么用处 sponsored three-legged race or balloon release 意思 he has a three-legged table he worte a two-thousand-word report 同是名词leg加ed为什么word不加? i have three books.( )om my desk?是it is?还是they are on my desk? he was seen to sit at a_ table yesterday A three-legs B three-legged The____chair isn't suitable for a young child.He may fall offA.three-legging B three-legged C three-legs a warm-hearteda one-eyed mana three-legged deskacoid-biooded animala white-hairedgirl 英语中几个骂人的话如何翻译?blue-eye-boy, apple polishing, three legged根据上下文可以确定是骂人的话,或者说是三个骂人的词,中间一个“apple polishing”,我知道,应该是“马屁精”的意思.但是,其他 There are three books is the desk对划线部分提问对划线部分提问是three books There are three bags of rice on the desk.划线提问,three bags of是划线内容.three bags of是划线内容 In the back room,there is nothing but a ________against the wall.A.three-legging table B.three-legged table C.three legs table.怎么选为什么谢谢 The three-____chair isn't suitable for a young child.He may fall Alegging B legged C legs D leged 对three提问How many glasses of milk are there on the desk那错了前边的句子是：There are three glasses of milk on the desk对这句中的three