To …, Main Clause

结构︰

不定词词组，主要子句

说明︰

此类<不定词词组>通常放在句首，表示目的，修饰<主要子句>。常用的有 to tell the truth（老实说），to do someone justice（替某人说句公道话），to be brief（简言之），to begin with（首先），to sum up（总之），to make matters worse（更糟的是），so to speak（可以这么说），needless to say（不用说），to say nothing of sth。（更不用说）等。

To make sure that he was at home, I called him up in advance.
为了确定他在家，我事先打电话给他。
To tell the truth, I don’t agree to your plan.
老实讲，我不同意你的计划。
To do her justice, she is not as bad as you described.
说句公道话，她并没有你说的那样坏。
To sum up, only when strict punishment can be imposed on the lawless, can social stability be maintained.
总之，唯有当严刑峻罚加之于违法之徒时，才能维持社会安定。
Mary is, so to speak, a hardworking student.
玛丽可说是个用功的学生。
I can’t speak English, to say nothing of Chinese.
我不会说英语，更别提中文了。
Needless to say, learning without thinking is useless.
不用说，学而不思则罔。