1. The "as" refers back to two causes First: " with such a bad grace" Second: " and in such an abrupt manner" If it had been a single cause, no comma would have been needed. However, by giving two causes, he can separate the second cause with a pair of commas, showing that it is an extra cause (and could be left out and still make sense).
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So, no, not a series of humble actions or state. Instead, he
No, the "worse" does
park sang joonYou will not think the worse of my umbleness~ you will not think badly about my humility ~ you will not have a poor opinion of [me / my humility]
dave_anonHow dare you say that a sentence of Dickens has no particular meaning!I think you may have the wrong end of the stick. As I see it, Doctor D was commenting on two "sentences" presented by the OP, park sang joon. I quote from the OP's post: