"I would wish not to be hasty in censuring any one; but I always speak what I think."

"I know you do; and it is that which makes the wonder. With your good sense, to be honestly blind to the follies and nonsense of others! Affectation of candour is common enough; -- one meets it every where. But to be candid without ostentation or design -- to take the good of every body's character and make it still better, and say nothing of the bad -- belongs to you alone. And so, you like this man's sisters too, do you? Their manners are not equal to his."

"Certainly not; at first. But they are very pleasing women when you converse with them. Miss Bingley is to live with her brother and keep his house; and I am much mistaken if we shall not find a very charming neighbour in her."

Elizabeth listened in silence, but was not convinced. Their behaviour at the assembly had not been calculated to please in general; and with more quickness of observation and less pliancy of temper than her sister, and with a judgment, too, unassailed by any attention to herself, she was very little disposed to approve them. They were in fact very fine ladies, not deficient in good humour when they were pleased, nor in the power of being agreeable where they chose it; but proud and conceited. They were rather handsome, had been educated in one of the first private seminaries in town, had a fortune of twenty thousand pounds, were in the habit of spending more than they ought, and of associating with people of rank; and were therefore in every respect entitled to think well of themselves, and meanly of others. They were of a respectable family in the north of England; a circumstance more deeply impressed on their memories than that their brother's fortune and their own had been acquired by trade.

请教老师：

这一句 and I am much mistaken if we shall not find a very charming neighbour in her. 为什么主句是一般现在时，反而从句是用了shall将来时呢？为什么和我们常见的主从句时态完全相反？

nor in the power of being agreeable where they chose it 我很难理解句意什么？这个it又是指的什么？

另外，在最后一句比较分句中，为什么出现了than that中的that ? 似乎这个that是多余的？