1. Mary was by now so consumed with contempt for Darnley that she resolved to be rid of him.

结构解析：这是含有结果状语从句的复合句。

主句是：Mary was by now so consumed with contempt for Darnley，从句是：that she resolved to be rid of him。

在主句中，谓语是was consumed，by now做时间状语修，so是副词表示程度修饰谓语consumed，with contempt for Darnley是介词短语，表示方式修饰谓语consumed，在这个介词短语总for Darnley是介词短语作定语，修饰contempt。

这个从句是结果状语从句由that引导。Resolve to be rid of him中用的是be rid of，而不是用get rid of。Be rid of是侧重强调与一种状态，在解说中，主要是讲说玛丽心中产生摆脱丈夫达恩利的这中想法，而get rid of侧重强调与动作。

2. Possibly all she meant was to be rid of him as a husband but there were some devotees, in particular the Earl of Bothwell, who took her sighs to mean something altogether more decisive.

结构剖析：这个句子是有并列连词but连接的2个并列分句。

第一个分句是：Possibly all she meant was to be rid of him as a husband。在这个分句中含有一个定语从句——she meant修饰先行词all。这个先行词是不定代词，指代事件，在从句中做宾语，省略了引导词that。

第二个分句是：there were some devotees, in particular the Earl of Bothwell who took her sighs to mean something altogether more decisive.

在这个分句中in particular the Earl of Bothwell是做插入语。在这个插入语中含有一个定语从句：who took her sighs to mean something altogether more decisive。它修饰先行词the Earl of Bothwell。它在定于从句中做主语，引导定于从句的关系代词who和that都可以用。由于是做主语，所以不能省略。