201. lay the table摆桌子
Please lay the table. Dinner is ready.
202. lead to 导致
Carelessness led to the terrible traffic accident and death of five passengers.
203. do one's lesson做功课
You have to do your lesson before you can watch TV.
204. have lesson上课
We don't have any lessons on weekends.
205. let in让……进入
Windows let in light and air.
These shoes let in water.
Who let you in?
206. let out把……放出；泄露（秘密）
He let air out of the tyros.
He tried to be calm, but his voice let him out.
207. live on 以……为生
He lives on a small wage.
208. look after照顾
I decide to stay home and look after my grandmother.
209. look back upon回顾
Sometimes when we look back upon the past, we will cherish what we have more.
210. look down upon (on)瞧不起
I look down upon those independent women.
211. look for寻找
I've been looking for my key for half an hour.
212. look forward to盼望、期待
Winter vacation is coming. I'm looking forward to seeing my family.
213. look into.朝里看；调查
I looked into the bush and found a ball.
I should look into this complicated case later.
214. look out当心
Hey! Look out, the truck is coming behind.
215. look (a)round环视；仔细分析情况
Don't make a hurried decision; look (a)round well first.
216. look up查找
I'll look up the new word in the dictionary.
217. have/take a look看一眼
Oh, what a pretty dress. Let me have/take a look.
218. lose heart.丧失信心
Never lose heart. Keep on trying.
219. lose one's life丧命
In the earthquake, some two thousand residents lost their lives.
220. lose one's voice失声
Being a teacher, she often loses her voice after a three-hour lesson.