513.many(形)许多的
接可数名词
How many sisters do you have?你有几个姐妹？

514.map(名)地图、天体图
He can't even read a map.他甚至不会看地图。

515.March(名)三月
M需大写
March comes in like a lion and goes out like a lamb.三月天来如猛狮，去如绵羊。

516.mark(名)痕迹、记号(动)做记号、评分
(名):You can see the marks of him on higher education.从他身上你可以看到受过高等教育人的特点。
(动):The box of eggs was marked "With Care".这个鸡蛋盒标示了“小心”的字样。

517.market(名)市场、市集
They put a new product on the market.他们向市场推出了一种新产品。

518.maaried(形)结婚的、已婚的
Is she married?她结婚了吗？

519.math(名)数学
I'm helpless at math.我的数学实在不行。

520.matter(名)内容；事情；问题
What's the matter.怎么了？

521.may(助)可能
She may be a nurse.她可能是个护士。

522.May(名)五月
M需大写
My mother's birthday is on May 14th.我妈妈的生日是五月十四日。

523.maybe(副)可能、也许
Maybe you'll have better luck next time.也许下次你的运气会好一点。

524.meal(名)餐、饭食
I had a solid meal.我饱食了一顿。

525.mean(形)卑劣的、鄙陋的(动)意思
(形):That was a mean trick!那是一个卑劣的诡计！
(动):What do you mean?你的意思是什么？

526.meat(名)食用的瘦肉
不含鱼类、鸟类
I want a good cut of meat.我要一片好肉。

527.medicine(名)医学、医术；内服药
Why did the patient refuse to take the medicine?那个病人为什么不肯服药?

528.medium(名)媒介；手段、方法
Air is a medium for sound.空气是声音的传播媒介。

529.meet(动)遇见、碰见
不规则变化met, met
I met her at the park.我在公园遇见了她。

530.meeting(名)集会、会议
Mr. White isn't here. He's at a meeting.怀特先生不在这儿，他在开会。

531.menu(名)菜单
Let us see what is on the menu today.让我们看看今天菜单上有些什么菜。

532.mile(名)英里
At first we covered about 100 miles a day.起初我们每天走一百英里。

533.milk(名)牛奶
he drinks milk every morning.他每天早晨喝牛奶。

534.million(形)百万的(名)百万
(形):There are five million permanent residents in the city.这个城市有五百万常住居民。
(名):I have millions of CDs.我有数以百万计的CD。

535.mind(名)记忆、回忆(动)留心、注意
(名):It completely slipped my mind.对此我一点也记不起来了。
(动):Mind the wet paint.当心油漆未干。

536.minute(名)分
I'll be back in a minute.我马上就回来。

537.Miss(名)小姐
M需大写
Miss Brown is a popular teacher.布朗小姐是位广受欢迎的教师。

538.miss(动)失误；错过；思念
The hunter fired at the deer but missed.猎人向鹿开了枪，但未打中。

539.mistake(名)错误(动)弄错
不规则变化mistook, mistaken
(名):Tom didn't make a single spelling mistake in his composition.汤姆在这篇作文里一个词也没拼错。
(动):You mistook my meaning entirely.你完全误会了我的意思。

540.modern(形)近代的、现代的
In the afternoon, they went to an exhibition of modern art.他们下午去参观了现代艺术展。

541.moment(名)瞬间、片刻
Wait a moment. She's coming.请稍等，她马上来。

542.Monday(名)星期一
M需大写
We were very busy last Monday.上星期一我们很忙。

543.money(名)钱、货币
Do they accept French money?他们接受法国货币吗?

544.monkey(名)猴、猿
There are many monkey in the zoo.动物园里有很多猴子。

545.month(名)月、一个月的时间
She flew to Japan last month.上个月她搭飞机去日本了。

546.moon(名)月亮
The moon has risen.月亮升起来了。

547.more(形)数目更多的；更佳的
He has more chance than ever.他从来没有过这样的大好机会。