8、As if this were not enough to reduce you to tears, your husband arrives, unexpectedly bringing three guests to dinner.
注意该句虚拟语气用法
reduce you to tears 迫使你流下眼泪
 Ex
You almost reduce me to tears.
His comforting words almost reduced his wife to tears.
His answer almost reduced me to silence.
The bomb reduced to the city to ruins.

9、Things can go wrong on a big scale as a number of people recently discovered in Parramatta,a suburb of Sydney.
on a big scale = to a great degree = to great extent
as引导非限定性定语从句

 Tips
1)as，which都可以引导非限定性定语从句，但as重点突出整个句子的含义，而which有可能指代主句当中某个词的含义，也有可能指代整个句子的含义。
2)As引导非限定性定语从句，可以用于主句之前，as和主句之间要有一个逗号分隔开来。
eg: As we expected, John was admitted to the university. John
3)As引导非限定性定语从句，也可以用在主句之后，这时就相当于which
eg:
She married him, which was unexpected.
She married him as was unexpected.
但在as所引导的非限定性定语从句中，如果运用的是被动语态结构，被动词可以省略。
eg:
She married him as unexpected. （was省略）
The material is elastic as shown in the figure.
(在这种情况下，shown之前省略了谓语动词，这时就不能把as换成which . 如果要用which则要补上谓语动词)
The material is elastic, which is shown in the figure新概念英语mp3下载