Question

帮我讲讲这两句英语语法谢谢！

9.The merry aged couple got married in 1949 and up till now they have been married for 6 decades，which was admired by many young couples.这对快乐的老夫妻是1949年结得婚，到现在已经结婚60年了，这令无数年轻夫妇羡慕不已。

10.The young clerk expressed full of confidence that he was qualified for that demanding mission，which was beyond our expectation.出乎我们意料的是，这位年轻的职员信心满满地表达了他能胜任这个高要求的任务。

Answer 1

第一个，这句话前半句是由and连接的两句话，后半句是由which引导的非限制性定语从句。
The merry aged couple got married in 1949 。是一句完整的话，主语是couple，谓语是get married。in 1949 是时间状语，the merry aged组合起来是定语，修饰couple。 which指代的是前面整句话，也可以理解为老夫妇结婚这件事。 作为后半句的主语！

第二个，跟上述道理一样。
不懂的话可追问。
水平有限，谢谢。。。。