481.lesson(名)课
She gives the children music lessons.她给孩子们上音乐课。

482.let(动)准许；让……做
不规则变化let, let
She would not let the child do it.她不会让孩子做这件事的。

483.letter(名)字母；信件
There are 26 letters in the English alphabet.英语字母有26个。

484.library(名)图书馆
I borrowed this novel from the school library.我从学校的图书馆借来这本小说。

485.lie(动)说谎；卧、躺
不规则变化lay, lain
He lied about his age.他在年龄上撒了谎。
He lay down for a rest.他躺下来休息一会儿。

486.life(名)生命；生活
Life isn't all fun.人生不总是充满欢笑的。

487.light(形)明亮的；轻的(名)光线
(形):In summer, it's still light at 10 o'clock.在夏夭，晚上十点还很亮。
(名):She was reading by the light of a candle.她在烛光下读书。

488.like(形)相似的(动)喜欢
(形):I am like my brother.我跟我的兄弟很相像。
(动):She likes playing the piano.她喜欢弹钢琴。

489.line(名)线、绳
She hung the clean clothes on the line.她将洗好的衣服晾在绳子上。

490.lion(名)狮子
The soldier was as brave as a lion。那个士兵如狮子般勇猛。

491.lip(名)唇
She compressed her lips and kept silent.她紧闭嘴唇，一声不吭。

492.list(名)清单、目录(动)把……编列成表
(名):His name was dropped from the list.他的名字从名单上除去了。
(动):Mother listed the items she wanted to buy.母亲把她想买的东西列出清单。

493.listen(动)倾听
后接介词to
Each night after dinner, we like to listen to the news.每天晚饭之后我们都喜欢听新闻。

494.little(形)小的
The little dog followed the boy everywhere.那条小狗到处都跟着那男孩。

495.live(动)居住；活着
She lives about ten miles from my house.她住在离我的屋子大约十英里远处。

496.live(形)有生命的，活的；现场直播的
We sell live fish.我们出售活鱼。
We watched a live television show.我们观看了一场电视现场直播的表演。

497.living room (名)客厅
The window of the living room is dirty.客厅的窗户很脏。

498.lonely(形)孤单的
When his wife died，he was very lonely.他太太死后他非常孤独。

499.long(形)长的(名)长时期
(形):The railway is1000 miles long.这铁路长1000英里。
(名):I am not going away for long.我不会离开太久。

500.look(动)注视、看；寻找
后接介词at
What are you looking at? 你在看什么？

501.lost(动)失去、损失
不规则变化lost, lost
Paul's father lost his job last month.保罗的父亲上个月失业了。

502.loud(形)喧闹的、高声的
He has a loud voice.他的嗓门很大。

503.love(名)爱；爱人(动)喜爱
(名):John and Mary are in love.约翰和玛丽在恋爱。
(动):You should love your students.你应该爱你的学生。

504.low(形)低矮的、消沉的、低劣的
反义词high
The office is in a low building.办公室设在一栋低矮的房子里。

505.lucky(形)幸运的、好运的
You are lucky to be alive.你能活着算是幸运的了。

506.lunch(名)午餐
Lunch is from eleven to one.午餐从十一点供应到一点。

507.machine(名)机器、机械装置
How do you withdraw money from an ATM machine?你是如何从自动提款机里提钱的？

508.magic(名)巫术、魔术(形)魔术的；不可思议的
(名):The fairy's magic changed the two brothers into swans.仙子用魔法将两兄弟变成了天鹅。
(形):That was a truly magic moment.那真是不可思议的一刻。

509.mail(名)邮政(动)邮寄
(名):Air mail is quicker than sea mail.空邮比海运快。
(动):I have mailed the letter.我已经把信寄出去了。

510.mailman(名)邮差
英postman
The mailman delivers letters and parcels every morning.邮差每天早晨送信件和包裹。

511.make(名)制造方式；品牌(动)制作；整理；准备；使
不规则变化made，made
(名):What make is your car?你的汽车是什么型号？
(动):Mary made a paper boat.玛丽做了一只纸船。

512.men(名)男人；人类
复数men
All men are born equal.人生而平等。