n. 十年, 十

◆记忆方法一：
分析：de——“德”的拼音；ca——化学元素钙；de——“的”的拼音。
记忆：德国人花了十年的时间来补钙。

◆记忆方法二：
联想方式：de-(得）；ca-(茶）；de-(的）
记忆方法：十年才学得茶道的功夫。
◆记忆方法三：
词根词缀记忆法：decade n 十年（dec十；参考：decagon 十角形,“ade”表示“状态，物品”

clock/watch/time/second/minute/hour/moment/morning/afternoon/evening/eve/night/day/week/month/season/year/decade/century
记忆：
1. clock [ klCk]　n. 时钟 You are late again. You should have bought an alarm clock. 你又迟到了，你早该买一个闹钟了。
2. watch [ wCtF ]　n. 手表，注视　vt. 看, 注视 The boy watched the clicking watch with great interest.男孩饶有兴趣地观看着滴答滴答的钟。
3. time [ taim]　　n. 时间, 时机, 次数　vt. 安排...的时间,　计时 I will time when you stay under water.我来计你呆在水下的时间。 格言： All time is no time when it is past.光阴一去不复返。 Everything has its time and that time must be watched.万物皆有时，时来不可失。Time is money.一寸光阴一寸金。
4. second [ 5sekEnd ]　　n. 秒, 片刻, 第二 The second you leave the room, you will get a big surprise. 你一离开这房间就会得到一份大惊喜。
5. minute [ mai5nju:t ]　　n. 分, 分钟, 片刻, 备忘录vt. 记录, 摘录adj. 微小的, 详细的 It takes only a few minutes to keep such a minute record.做这样的小记录只花几分钟时间。
6. hour [ 5auE]　n. 小时, 钟头 Not until half an hour later did the boy rise out of water. 半个小时后男孩才浮出水面。
7. moment [ 5mEumEnt ]　n.瞬间 Wait a moment, please. I’m coming.请稍等一下。我随后就到。
8. morning [ 5mC:niN ]　n.　早晨 He set out for Nanjing on a warm spring morning.在一个暖和的春日早晨，他往南京去了。
9. noon [ nu:n] n. 正午 The workers have a break at noon. 工人们正午时休息。
10. afternoon　n.　下午 We have three classes in the afternoon. 我们下午上三节课。
11. evening　n.　晚上 I hardly watch TV expect news in the evening. 晚上除了新闻，我很少看电视。
12. eve　 [i:v] n.　前夕 There is often a great celebration on Christmas Eve. 圣诞前夕常有一个盛大的庆祝活动。
13. night　 n.　夜晚 I don’t think it’s necessary to study deep into the night. 我认为没有必要学习到深夜。
14. day　n.　白天 We work in the day and sleep at night. 我们白天工作晚上睡觉。
15. week　n. 周 We will hold an English Week next month. 我们下月举行英语周活动。
16. month　 n.　月 January is the first month of year.元月是全年的第一个月。
17. season　 [5si:z(E)n] n.　季节 Peaches are cheaper when in season.旺季时桃子更便宜。
18. year　n. 年 Spring decides the result of the year.一年之计在于春。
19. decade　 [5dekeId] dec表示十；n. 十年 He lived in Yibin two decades ago.他二十年前住在宜宾。
20. century　 [5sentFErI] n.　世纪 With the new century beginning, more people hope for a peaceful world. 随着新世纪的来临，更多的人希望世界和平。
另类阅读：
The watch and the clock are used for timing. A moment is a short period of time. The smallest unit of time is second. As we know, sixty seconds makes up a minute and sixty minutes makes up an hour. A day is made up of morning, noon, afternoon, evening and night. Seven days makes up a week and thirty or thirty-one days makes up a month, which originally means the time it takes the moon to go around the earth once. Three months forms a season, four seasons forms a year, ten years equals a decade and ten decades equals a century.