Hi. I am really interested in grammar and i am really having some difficulties with it. I was just wondering how do you read a super long sentence and seeing what modifying phrase modifies another phrase. Like just yesterday I was reading the longest Proustian sentence.

For example:

"Their honour precarious, their liberty provisional, lasting only until the discovery of their crime; their position unstable, like that of the poet who one day was feasted at every table, applauded in every theatre in London, and on the next was driven from every lodging, unable to find a pillow upon which to lay his head, turning the mill like Samson and saying like him....

How the hell is this a sentence... I don't know. Can someone help me break down this sentence. Like how can you start a sentence with "Their honour precarious, their liberty provisional;lasting only until the discovery of their crime..." What is this? What phrase is modifying what? How is this even a sentence?

P.S. Can you guys recommend me any books that is all about breaking down super long sentences like the Proustian sentence and also that tries to explain the grammar part of it. I have been searching this kind of book all over the internet. All i find is a grammar book with easy examples. I would really appreciate it very much if you guys recommend me any advanced, top grammar book with hard examples.

Thanks...