1. Perhaps things might be better between the two of them if Mary accepted Elizabeth's choice of a safe Protestant husband for her in the winning form of Robert Dudley.

结构剖析：这是一个含有分隔式同为语从句的复合句。主句是：
Perhaps things might be better between the two of them；分隔式同位语从句是：if Mary accepted Elizabeth's choice of a safe Protestant husband for her。

先看主句：主语是things，谓语是might be better。其余的都做状语，perhaps是副词做程度状语，between the two of them是介词短语做状语。

（2）再看从句：这个同位语从句的引导词是if，它是具体意义的，意思是“是否”，能省略的。

从句中主语是Mary，谓语是accepted，宾语是choice，这里有3个定语都是修饰choice的：Elizabeth's（伊丽莎白的） 、of a safe Protestant husband（可靠的清教徒的丈夫）和介词短语for her（为她）。

2. One tiny problem with this plan, though, Mary had no intention of being told what to do by Elizabeth.

结构剖析：这是一个含有表语从句的复合句。主句是： One tiny problem with this plan，表语从句是 Mary had no intention of being told what to do by Elizabeth。此外，though在这里是做副词用，意思是“但是”。

在表语从句中，介词of的后面接的是动名词短语，这个短语使用的是被动语态——being told what to do by Elizabeth，进而来看这个动名词短语，它其中含有一个不定式——what to do，它做宾语。