J-K
J
1. jacket n.短上衣；茄克（衫）
2. January n.一月；元月
3. Japan n.日本
4. Japanese n. 日本人；日语 adj. 日本（人）的；日语的
5. jeans n.牛仔裤；斜纹布裤
a pair of jeans 一条牛仔裤
6. job n.工作；职业
7. join v.结合；加入；连接
Join one section of pipe to the next.
把一段管道与相邻的管道连接起来。
join sb. 加入、会面或相见。
Ask him to join us for lunch. 请他和我们一起吃午饭。
join sth. 参加（某组织）
He joined the Party last year. 他去年入的党。
join in sth. 参加（某活动）
近义词辨析：attend, join, take part in
attend 是指出席或参加会议、聚会、讲座等；
join是加入到某一组织、团体或人群中去，并成为其中的一员；
take part in 是参加到某项活动中。
Did you attend the meeting last Friday?
你参加上周五的会议了吗？
When did you join the club?
你什么时间加入的俱乐部？
All the students take part in the party.
所有的学生都参加了聚会。
8. joke n.笑话；笑料 v. 开玩笑
Dont be angry. Its just a joke. 别生气，这只不过是个玩笑。
I didnt mean any harm. I was just joking. 我并没恶意，我不过开个玩笑。
play a joke on 开某人玩笑
Its impolite to play a joke on others. 开别人玩笑是不礼貌的。
9. joy n.欢欣；高兴
10. juice n.（水果）汁，液；果汁
11. July n.七月
12. jump v.跳跃；跳动
13. June n.六月
14. just adj. 公正的；正义的 adv. 只是；仅仅；刚刚；恰好；刚要
just now 刚才
K
1. kangaroo n. 袋鼠
2. keep (kept, kept) v.保持；保存；留有；经营；遵守；饲养
keep on doing something 一直做某事
I shouted to him but he just keep on writing. 我向他喊话，可是他一直继续写字。
keep out 不许进入，抵挡在外
Those trees can keep out the strong wind. 那些树木可以抵御狂风。
keep away from 不靠近
keep a secret 保守秘密
keep a diary 记日记
keep+adj. 保持某种状态
Schools keep closed for about two months in summer. 暑期学校停课约两个月。
keep+n. 保存，保管
Could you keep these books for me, please? 你能替我保管这些书吗？
keep off 勿踏; 勿踩
近义词辨析：borrow/keep
borrow属瞬时动词，其动作不能延续，不能和表示时间段的状语连用；而keep可以跟时间段连用。
You can keep the book for three days.
这本书你可以借三天。
He borrowed the book three days ago.
他是三天前借的这本书。
3. key n.钥匙；关键；钥匙；键
4. keyboard n.键盘
5. kick v./n.踢；反冲
6. kid n.小孩；小山羊
I just want to speak to my kid brother. Its none of your business. 我只是想和我的弟弟通话，不关你的事。
7. kill v./n.杀死；扼杀
8. kilogram/kilo n.千克
9. kilometre n.千米；公里
10. kind n. 种类 adj. 和蔼的；善良的
11. king n.君主；国王
12. kiss n./v.吻；轻触
13. kitchen n.厨房；炊具
14. kite n.风筝
15. knee n.膝；膝部
16. knife (pl. knives) n.刀；匕首
17. knock v./n.敲；打
knock into 撞上
knock down 撞倒
knock at (on) the door 敲门
a knock at (on) the door 敲门
18. know（knew, known）v.了解；熟悉； 知道；认识；懂得
be known for 因而出名
He is known for his works. 他是因其作品而出名的。
be known as 作为而出名
Lu Xun was known as a writer. 鲁迅作为作家很出名的。
know about 了解或知道某事物
let sb. know 让某人知道......
make oneself known to 对作自我介绍
近义词辨析：know/know of
know 的意思是知道、认识、熟悉
I know his father very well. 我跟他的父亲非常熟悉。
know of 的意思是知道情况、听说过
I know of him, but I dont know him.
我听说过他，但是我不认识他。
19. knowledge n.知识；知道