seventh
词根词缀：
后缀
-th
1 表名词，通常指抽象名词，“行为，性质，状态”
2 表序数词，“第…”
eighth num. 第八
seventh num. 第七
sixth num. 第六
tenth num. 第十
数据来源：新东方英语词汇速记大全
相关例句：
By the time I took office, the war in Afghanistan had entered its seventh year.
在我上任的时候，阿富汗战争已经进入了第七个年头。
I am in the seventh heaven.
我真的是太高兴了！
In seventh grade Mark went out for three sports but was rather poor in two of them
马克在7年级的时候参加了3个运动项目，但是其中两项他都表现得实力不济。
A million people died, a seventh of the population.
共有100万人丧生，占总人口的七分之一。
Just give him a bucket and spade and he's in seventh heaven!
只要给他一个桶子和一把铲子，他就高兴极了！
Following the futuristic The Handmaid's Tale, Margaret Atwood's seventh novel, Cat's Eye, returns to more familiar territory
写完了具有未来色彩的《女仆的故事》之后，玛格丽特·阿特伍德的第七部小说《猫眼》回归到了人们较熟悉的题材上。