do me a favor还是favour?

do me a favor还是favour? favor与favour的区别,为什么所有的书里全是Could you do me a favor?而没有Could y he did me a big favour 还是favor 这两个单词有什么区别吗 Do me a favor? do me a favor Do me a favor. Please do me a favor please do me a favor~ do me a favour do是什么意思 Please help me!do me a favor! Can you do a favour for me? can you do me a favour?