9. It was destined that they would marry.
他们结婚是缘分。
还能这样说：
They were doomed to marry.
It was their destiny to get married.
应用解析：
be destined for 预定，指定；
be destined to do... 注定……
10. Marriage is no joke.
婚姻不是儿戏。
还能这样说：
Getting married is a great event.
Marriage is no laughing matter.
谚语：
Marriage is the bloom or blight of all men's happiness.
结婚是人生幸福花朵开放的时候，也可能是凋谢的时候。
11. We'll throw him a bachelor party.
我们会帮他举行一个告别单身的派对。
还能这样说：
We will celebrate him to end his single life in the party.
Let's throw thim a single party.
应用解析：
bachelor girl 独立生活的未婚女子；
Bachelor of Arts 文学士；
Bachelor of Science 理学士；
bachelor's degree 学士学位
12. They married when they were young.
他们年纪轻轻就结了婚。
还能这样说：
They got married when they were quite young.
They entered into marriage while they were twigs.
谚语：
An old physician, and a young lawyer.
医生年老的好，律师年轻的俏。
13. When are you getting married?
什么时间结婚？
还能这样说：
When do you plan to marry her?
When do you want to make a match of it?
应用解析：
marry up 配合，匹配；结合；
marry into sth. 因结婚而为（某家庭等）的成员
14. I prefer a bachelor girl to be a wife.
比起结婚我更愿意单身。
还能这样说：
I like to be single better.
I prefer to be single.
应用解析：
prefer a charge 提出控告；
prefer sb. for 提拔某人为……
15. Marriage are made in heaven.
姻缘天注定。
还能这样说：
Marriage comes by destiny.
It is destined to marry.
应用解析：
call heaven to witness 请老天爷作证；
heaven on earth 人间天堂
16. Her parents reluctantly consented to the marriage.
她父母勉强答应了这桩婚事。
还能这样说：
Her parents gave a tardy consent to the marriage.
Her parents agreed grudgingly to her marriage.
应用解析：
by mutual consent 双方同意；
carry the consent of sb. 得到某人的允许；
with one consent 一致同意，公认
17. There is no hurry to get married, Sarah.
莎拉，不用急于结婚。
还能这样说：
Sarah, don't be eager to marry off yourself.
There is no need to worry to give you in marriage.
应用解析：
split of a hurry 极为匆忙；
without hurry or bustle 不慌不忙地；
in no hurry 不着急