Would you do me the favour ...不能用a,为什么?字典上是do sb.a favour

Would you do me the favour ...不能用a,为什么?字典上是do sb.a favour DO SB.A FAVOUR will you do me a favour?和 would you do me a favour?什么区别 do sth as a favour;ask a favour of sb ;do the favour to do造句 Would you do me favour? Would you be ______ to do me a favour,please? do sb.a favour造句 do sb a favour造句 Can you do a favour for me? can you do me a favour? Can you do me a favour “Would you please do me a favour and carry the box upstairs?