核心词议：
n. 一生；寿命；终生；使用期
adj. 一生的；终身的
lifetime 基本解释
n. 一生，寿命；有生之年；存在期，有效期
na. 终生；终身保障；[核]寿命
na. 终生；终身保障；[核]寿命
速记方法
速记技巧 组合记忆法 life=生命，time=时光，时间， 所以lifetime就是生命的时间，引申为一生，寿命。
知识扩展
词语辨析
下面三句所表达的意思不同。
His grandma never travelled by air in her lifetime.他祖母一辈子都没坐过飞机旅行。(表示一辈子没乘过)
His grandma has never travelled by air in her lifetime.至今他祖母还没有坐过飞机旅行。(从出生到现在不曾坐过)
His grandma said she had never travelled by air in her lifetime.他祖母说她从没坐过飞机旅行。(从出生到说话时还未坐过)
重要短语
of a lifetime一生最…的；终身难遇的
once in a lifetime一生一次
long lifetime长寿命
lifetime achievement终身成就
lifetime 变化形式
复数： lifetimes
中文词源： lifetime
精选例句
1、 The more friends you make in your lifetime.
你在生活中交的朋友也就越多[机器自动翻译，如有错误，感谢纠错]
2、 An opportunity like this comes once in a lifetime.
像这样的机会一生也许只会遇到一次。
1、 We need to continue to value broad preparation in thinking skills that will serve for a lifetime.
我们需要继续重视广泛的思维技能准备，这将服务于一生。
1、 The data are clear: a liberal arts education is great career preparation, both for excellent lifetime earnings and for satisfaction with the work.
数据很清楚:文科教育是很好的职业准备，无论是终身收入还是对工作的满意度。
1、 During his lifetime, though, he was also one of England’s foremost classical-music critics, and a stylist so widely admired that his Autobiography (1947) became a best-seller.
然而，在他的一生中，他也是英国最重要的古典音乐评论家之一，也是一位广受钦佩的造型师，他的自传(1947)成为畅销书。
常见考点例句：
- Improving infant diets does a lifetime of good .
- 改善婴儿的膳食结构使其终生受益。
- You 're developing lifetime relationships with people in your target market .
- 你在和目标市场中的人们建立终生的联系。
- But the researchers admit that a lifetime of practicing braille could also get the credit .
- 但是研究人员也承认，终生练习布莱叶文也可以有此效果。
- Expectations of lower future taxes and higher lifetime earnings may encourage investment and spending .
- 对未来税收更低、终生盈利的期望也将刺激投资与消费。
- How has hong kong changed in your lifetime ?
- 在您的一生中香港有什么变化？
