英语语法结构转换的几个疑问

英语语法结构转换的几个疑问
1、分词独立结构与状语从句的转换
This being granted,the proof is easy=If this be granted,the proof is easy.
假定是这样,那么就不难证明了.（一教授编的书中的内容）
我认为条件状语从句应该是If this is granted the proof is easy.
2、with all the work done ,we can have a rest.=since all the work is done,we can have a rest.
能否说 All the work done,we have a rest.
3、The square looks marvellous with all the light on.
我认为应是The square looks marvellous with all the lights on=The square looks marvellous when all the lights are turned on.
4、Modest,unassuming,easy to approch,premier Zhou soon put everyone there complete at ease.
我觉得句子中的complete应该是completely
查字典有：He felt completely at ease with Bernard.
此句形容词短语怎样转换成状语从句?
请英语专家、高手指教,不胜感激!(有语法结构转换的好例句一定给您加分）