he did a big favour to me.用to还是for啊
问题描述：
he did a big favour to me.用to还是for啊
答
do me a favour =do a favour for me (意思是：帮我个忙)；do a big favour 那就是：帮个大忙；后面一样要用for
he did a big favour to me.用to还是for啊
do me a favour =do a favour for me (意思是：帮我个忙)；do a big favour 那就是：帮个大忙；后面一样要用for