（a）piece of paper有a吗

（a）piece of paper有a吗 a piece of paper a piece 和a piece of paper有何区别? 请问:a piece of paper和a sheet of paper有区别吗? a piece of paper可以用a paper吗?为什么? a piece of paper 是什么意思 a piece of paper中文 a piece of paper money That is a piece of paper.(改为否定句） That( )( )a piece of paper. a piece of sth.形容词放在什么位置?如：用good修饰a piece of papera good piece of paper 和a piece of good paper 它们的意义有不同吗？ have a seat .a piece of paper . a piece of paper 的中文意思 a piece of paper的汉语意思 a piece of paper 求翻译急! a fresh piece of paper fresh同义词 a piece of 哪些比如a piece of paper a piece of cake a big piece of paper 和 a piece of big paper呢?哪个正确 a big piece of paper?还是 a piece of big paper?