求问如何正确的在英语作文中引用某段话?

求问如何正确的在英语作文中引用某段话?
For example,as Dickens said of the French Revolution in his book,A Tale of Two Cities,’It was the best of times, it was the worst of times.’,which is also true of China today.
这是我的句子?这样写对吗?
’It was the best of times, it was the worst of times.’在句子中做什么成分呢?
谢谢诸位了.