favour

1.your favour在商业信函里代替your letter, your order, your inquiry等。例如：Your favour of 6 August has been received. 也有用your esteemed favour, your valued favour或your kind favour的。在一般通信里该避免。

2.说自己为别人服务，不可用favour。

3.可以说I ask the favour of your doing it（请帮忙）或I ask you to do me the favour of doing it。不可说I ask your favour of doing it。

4.favour（动词）不可有双宾语，如不可说Please favour me an early reply。该在me后面加上with。

5.favour在口语里有时作“貌似”解。例如：John favours his father and his brother favours his mother. 注意favour只作“貌似（父亲而不似母亲）”或“貌似（母亲而不似父亲）”解，不作“貌似（父母）”解，如不可说John favours both his parents。favour更不作“貌似（父或母以外的任何人）”解，如不可说John favours his brother或John favours his friend Peter。