句子改写成无动词分句：
1. The rescue party brought them down to the base camp: they were half-dead with the cold.
习题答案有两种改写方法：
A. The rescue party brought them down to the base camp: half-dead with the cold.
B. Half-dead with the cold, they were brought down to the base camp by the escape party.
被动句B容易理解，形容词短语half-dead with the cold 的逻辑主语是主句they。
但主动句A，冒号后的形容词的逻辑主语是宾语 they而不是主语the rescue party。请教老师，这样的情况也是允许的？是垂悬结构吗？
2. As if this had happened by previous arrangement, she came to the palace from Deptform by water, while Leicester arrived by land.
改写成无分词分句：
As if by previous arrangement, she came to the palace from Deptform by water, while Leicester arrived by land.
我的问题和上道题的性质一样。此句主句主语是she，as if分句的主语是this （this 应该指代是它后面的主句和while分句的内容）。主语不同，为什么还能这样改写？
3. They studied the cliff face: it was perpendicular.
习题答案说此句不可以改写。
我的问题是此句能否写成：They studied the cliff face, perpendicular, as it was. ?
或者,像第一句A那样：They studied the cliff, perpendicular.与B：Perpendicular, the cliff face was studied.
谢谢老师！
1. The rescue party brought them down to the base camp: they were half-dead with the cold.
习题答案有两种改写方法：
A. The rescue party brought them down to the base camp: half-dead with the cold.
B. Half-dead with the cold, they were brought down to the base camp by the escape party.
被动句B容易理解，形容词短语half-dead with the cold 的逻辑主语是主句they。
但主动句A，冒号后的形容词的逻辑主语是宾语 they而不是主语the rescue party。请教老师，这样的情况也是允许的？是垂悬结构吗？
冒号后部分为补充说明。一个形容词短语修饰一个名词词组，修饰离它近期的一个名词。故这个形容词短语对宾语作补充说明。A句中形容词短语在传统语法剖析为非限制性定语。在B句中，形容词短语作状语。
Huddleston则将A、B 二句中的形容词短语都剖析为补充语（supplement）：对句子或句子一部分作补充说明的成分。
悬垂结构一般指坐落于句首的修饰性状语（分词、形容词短语，介词短语等）的逻辑主语不是句子的主语。A句形容词短语不在句首，而且其修饰的名词在其之前，所以不是悬垂修饰语。
2. As if this had happened by previous arrangement, she came to the palace from Deptform by water, while Leicester arrived by land.
改写成无分词分句：
As if by previous arrangement, she came to the palace from Deptform by water, while Leicester arrived by land.
我的问题和上道题的性质一样。此句主句主语是she，as if分句的主语是this （this 应该指代是它后面的主句和while分句的内容）。主语不同，为什么还能这样改写？
有的连词引导的状语从句，假如从句和主句主语相同，从句还有动词be, 则该状语从句可以省略主语和be.。还有一条规则网友忽视了：假如从句的主语为指代主句内容的人称代词it，且从句谓语含有动词be, 则从句的主语it 和Be 一块省略。比如，Call me at home if necessary.
本句改写并非直接由原句改写，而是先将原句改写为 As is it was by previous arrangement, she... ，进而省略as if从句中的it was.
3. They studied the cliff face: it was perpendicular.
习题答案说此句不可以改写。
既然语法书对你说这个句子不可以改写为无动词分句，为何要勉强为之？你写的句子都是不可同意的。这说明单个形容词不能做后置非限制性定语。
