beg
1.beg和beg for都作“请求“解，语气比ask和ask for重。对于boon，favour，leave，pardon，forgiveness和permission等词多用beg，少用beg for。对于施舍物也多用beg，少用beg for。说出了那被请求的人，该在指他（们）或她（们）的词的前面用of。例如：He begged a favour of us.
2.I begged him to help me和I begged of him to help me都可以说。说I begged (that) he would（偶尔用should）help me也可以。但不可说I begged him that he would help me。有时在以that引导的从句里用虚拟现在式。例如：I begged that he help me.
3.beg (leave) to announce，beg (leave) to state，beg (leave) to inform，beg (leave) to enclose等都是商业信函里的陈套语。在一般通信里该避免。
4.说“向…求乞”在beg后面接of或from。例如：He was too proud to beg of（或from）his friends.
