是have only one 还是only have one?

是have only one 还是only have one? 是it only have one size.还是it have only one size?有语法错误吗? only have one chance We have only one You have only one we have only one earth we only have one earth I have only one beautiful. I have only one brother.对only one提问 I have only one yuan.（对划线部分提问）划线部分是only one yuan 保护环境英语作文,开头是:We have only one earth. mr gao[ ](have)only one daughter If I only have one match love