laugh at 嘲笑
She was laughing at us all the time.她一直在嘲笑我们。
lay aside 把....搁置起来，积蓄
He lays aside an hour a day for reading.他每天抽出一小时来看书。
lay down 放下，开始建造
The general told the troops to lay down their arms.将军命令军队放下武器。
lay out 展开，铺开，布置，设计
Jim's dinner jacket was already laid out on the bed.吉姆的晚礼服已经摆在床上了。
lead to 通向，导致，引起
All roads lead to Rome.条条大路通罗马。
learn by heart 记住，背熟，默记
You should learn all the new words by heart.你应该把所有的单词都背下来。
learn from 向.....学习，从......学到，从.....得知
Lei Feng is a good example.Everyone should learn from him.雷峰是一个好榜样。我们每一个人都应向他学习。
leave alone 不管，不理会，不干扰
Leave the dog alone or he'll bite you.不要去惹那条狗，不然它会咬你的。
leave behind 留下，忘记带走
Take care not to leave your keys behind.留心别忘了带钥匙。
leave out 省去，略去，遗漏
If you can't think of the answer to the question, leave it out.假如你想不出那个问题的答案，就略而不答。
let alone 更不用说，更谈不上
The baby can't even walk,let alone run.这婴儿连路都不会走，更谈不上跑了。
let off 放（炮、烟火等）
Small boys are letting firewords off.小男孩们正在放烟火。
let out 放出，加大，加宽
He has got so fat that he'll have to let the coat out several inches.他长得太胖了，将不得不把衣服放出几英寸。
lie on 取决于； 是....的责任
It lies on the eldest son to make provision for his aged father.赡养年迈父亲的责任落在长子身上。
line up 排队，使排列起来
The people lined up at the ticket office.人们在售票处排队。
little by little 一点一点地，逐渐地，慢慢地
Little by little the snow disappeared.雪渐渐消失。
live on 继续活着；以....为主食，靠.....生活
We live on our salary.我们靠工资度日。
live through 度过，经受住
I could't live through another day like this.这样的日子我一天也熬不下去了。
live up to 不辜负，无愧于
The hotel didn't live up to its great name.这家旅馆有愧于它的盛名。
long before （很久）以前
I knew George long before I knew you.我早在认识你之前就认识了乔治。
long for 渴望
People are longing for peace.人们渴望和平。
look after 照顾，暂时负责，照看
I hope you will look after my luggage properly.我希望你能好好照顾我的行李。
look at 看，注视
Look at that cat,he is always asleep in front of the fire.你看那只猫，它总是睡在炉火前。
look back 回头看，回顾
He looked back and waved his hand to us.他回过头向我们挥手。
look down on/upon 看不起，蔑视
I wish you wouldn't look down on this kind of work.我希望你不要瞧不起这种工作。
look at 看，注视
Look at that cat, he is always asleep in front of the fire.你看那只猫，它总是睡在炉火前。
look back 回头看，回顾
He looked back and waved his hand to us.他回过头向我们挥手。
look down on/upon 看不起，蔑视
I wish you wouldn't look down on this kind of work.我希望你不要瞧不起这种工作。
look for 寻找，期待，预料
We are looking for new water sources.我们正在寻找新的水源。
look forwared to 希望，盼望，期望
We are looking forwared to seeing you again.我们盼望能与你再次相会。
look into 调查，研究，了解
The police are looking into the matter.警察正调查此事。
look on 旁观，观望
They stood looking on while the womon was robbed.他们袖手旁观，听任那位女士遭抢劫。
look out 当心，留神，提防
Look out when you're crossing the road!过马路时要小心！
look over 查看，检查
Don't forget to look over your work at the end of the examination.别忘了考试结束前把所做的题检查一遍。
look through 从头看完，浏览
He looked through the applications and picked out the best.他翻阅了所有的申请表格，从中挑出最佳人选。
look up 向上看，在词典中查寻
It is a good habit to look up new words in a dictionary.在词典里查生词是一个良好的习惯。
lose heart 丧失勇气，失去信心
No matter what difficulties may come our way,we must never lose heart.无论遇到什么困难，我们永远不要灰心。
lose sight of 看不见，忽略
We lost sight of him in the crowd.我们看着他消失在人群中。
lots of 大量的，很多的
Lots of tomatoes spoiled.很多西红杮都烂掉了。
