reply
1.reply作“回答”解是及物动词。例如：He had nothing to reply.和He did not know what to reply.作“答复”解是不及物动词，如He did not reply和He did not know how to reply。不可用作“答复（人）”，“答复（信件）”，“答复（问题）”等解，如不可说：
- He did not reply me.
- He did not reply my letter.
- He did not reply my question.
每句里的reply后面该加上to。
注意下面每组里的两句意思不同：
- He had nothing to reply.(他[虽然有问题而]不回答。)
He had nothing to reply to.(他没有什么[问题]要答复。) - He did not know what to reply.(他不知道该作什么答复。)
He did not know what to reply to.(他不知道该对于什么回答。)
2.reply后面不可接指人的词和以that引导的从句，如不可说He replied her that he should be glad to learn what she thought about his plan，该把her删去，或在her的前面加上to。
3.关于reply和answer的不同，参见answer 2
4.商业复信的开首往往用In reply to your letter...，Replying to your letter...或...in reply we wish to state...。在一般通信里该避免。
