不定式分句
当非限定动词结构出现在句中时，它便在深层结构上以主句的主语或其他名词性结构作为自己的＂逻辑主语' (logical subject), 从而形成“主谓结构＇，这就是“非限定分句' (non-finite clause)限定分句包括不定式分句
1) 不定式分句的结构模式
不定式分句分为不带主语、带主语和带疑问词等三种形式。
新浪博客
不定式分句
当非限定动词结构出现在句中时，它便在深层结构上以主句的主语或其他名词性结构作为自己的＂逻辑主语' (logical subject), 从而形成“主谓结构＇，这就是“非限定分句' (non-finite clause)限定分句包括不定式分句
1) 不定式分句的结构模式
不定式分句分为不带主语、带主语和带疑问词等三种形式。
a)
所谓不带主语，指不定式的逻辑主语是隐含的，通常可以在上下文或情景中判定。
I hope to be able to come.
.He likes to be invited.
All she seems to do is (to) gossip
I expect to have read this book by next Tuesday. 我希望读完这本书是在下周二之前。
He has a large
He saw no way out of it except to hang on and hope for the best.
The best thing would be to tell everybody.
有一些表示说话人对说话内容所持态度的不定式分句，其逻辑主语从内在意义上看就是说话人自己。
To be frank, I don't think much of it.
To be frank (坦白地说）,
To begin with (首先）， I
To tell the truth (说实话），I
To put it bluntly (和你直说吧）， that student is sure to fail.
George is a very good boy, to be sure.
本书把上述不定式分句作评注性状语 (disjunct) 处理。
We considered him to be a good officer.
这个句子是 SVOC (主动宾补）结构， to be a good officer 的逻辑主语是主句的宾语 him, 若改为被动句则
He was considered to be a good officer.
b) 带主语的不定式分句
不定式分句也能带有自己的主语，这个主语通常由 for 引导。
The best thing would be for you to tell everybody. 最好是你去告诉大家。
He opened the door for the children to come in.
We'd be delighted for you to come next week.
It's important for there to be a fire-escape.
这是由 for 引导的非限定there- 存在句， there 是语法上的主语。间或也可由 with, rather than 等引导。
He knew that with him to help, she could and would succeed. 他知道有他帮忙，她就能成功。
What's to become of Miss Hilary now, with her mother
Rather than you do the job , I'd prefer
这里， rather than 是个近似并列连词 (quasi-coordinator), 后面跟不定式，位于句首用不带 to 的不定式；位于句中其他位置时，不定式带 to 或不带 to 均可，视情况而定。上句中的 do 是不带 to 的不定式。
Rather than Robert drive (不带 to 不定式） in his present state, I'd prefer to drive him home myself.
间或也可不用任何词语引导，而把主语直接暨于不定式之前，构成传统所说的“独立结构' (absolute construction)
We shall assemble at ten forty-five, the procession to start moving at precisely eleven.
The plan was that the two parties should first reach an agreement on the basic principle, the details
c) 带疑问词的不定式分句
不定式分句还可带疑问词（又叫 wh- 词）。
I don't know what to do.
The question of what to sell is still undecided.
间或也可以带有从属连词。
He opened his lips as if to say something.
2) 才定式分句的句法功能
不定式分句可在句中作主语和主语补语，作宾语和宾语补语，以及在句中作状语；还可在名词词组中作修饰语，以及在形容词词组中作补足成分。
作主语和主语补语
To accept the job would mean moving to Florida.
To
所谓不带主语，指不定式的逻辑主语是隐含的，通常可以在上下文或情景中判定。
I hope to be able to come.
.He likes to be invited.
All she seems to do is (to) gossip
I expect to have read this book by next Tuesday. 我希望读完这本书是在下周二之前。
He has a large
He saw no way out of it except to hang on and hope for the best.
The best thing would be to tell everybody.
有一些表示说话人对说话内容所持态度的不定式分句，其逻辑主语从内在意义上看就是说话人自己。
To be frank, I don't think much of it.
To be frank (坦白地说）,
To begin with (首先）， I
To tell the truth (说实话），I
To put it bluntly (和你直说吧）， that student is sure to fail.
George is a very good boy, to be sure.
本书把上述不定式分句作评注性状语 (disjunct) 处理。
We considered him to be a good officer.
这个句子是 SVOC (主动宾补）结构， to be a good officer 的逻辑主语是主句的宾语 him, 若改为被动句则
He was considered to be a good officer.
b) 带主语的不定式分句
不定式分句也能带有自己的主语，这个主语通常由 for 引导。
The best thing would be for you to tell everybody. 最好是你去告诉大家。
He opened the door for the children to come in.
We'd be delighted for you to come next week.
It's important for there to be a fire-escape.
这是由 for 引导的非限定there- 存在句， there 是语法上的主语。间或也可由 with, rather than 等引导。
He knew that with him to help, she could and would succeed. 他知道有他帮忙，她就能成功。
What's to become of Miss Hilary now, with her mother
Rather than you do the job , I'd prefer
这里， rather than 是个近似并列连词 (quasi-coordinator), 后面跟不定式，位于句首用不带 to 的不定式；位于句中其他位置时，不定式带 to 或不带 to 均可，视情况而定。上句中的 do 是不带 to 的不定式。
Rather than Robert drive (不带 to 不定式） in his present state, I'd prefer to drive him home myself.
间或也可不用任何词语引导，而把主语直接暨于不定式之前，构成传统所说的“独立结构' (absolute construction)
We shall assemble at ten forty-five, the procession to start moving at precisely eleven.
The plan was that the two parties should first reach an agreement on the basic principle, the details
c) 带疑问词的不定式分句
不定式分句还可带疑问词（又叫 wh- 词）。
I don't know what to do.
The question of what to sell is still undecided.
间或也可以带有从属连词。
He opened his lips as if to say something.
2) 才定式分句的句法功能
不定式分句可在句中作主语和主语补语，作宾语和宾语补语，以及在句中作状语；还可在名词词组中作修饰语，以及在形容词词组中作补足成分。
作主语和主语补语
To accept the job would mean moving to Florida.
To