513.many(形)許多的
接可數名詞
How many sisters do you have?你有幾個姐妹？

514.map(名)地圖、天體圖
He can't even read a map.他甚至不會看地圖。

515.March(名)三月
M需大寫
March comes in like a lion and goes out like a lamb.三月天來如猛獅，去如綿羊。

516.mark(名)痕跡、記號(動)做記號、評分
(名):You can see the marks of him on higher education.從他身上你可以看到受過高等教育人的特點。
(動):The box of eggs was marked "With Care".這個雞蛋盒標示了“小心”的字樣。

517.market(名)市場、市集
They put a new product on the market.他們向市場推出了一種新產品。

518.maaried(形)結婚的、已婚的
Is she married?她結婚了嗎？

519.math(名)數學
I'm helpless at math.我的數學實在不行。

520.matter(名)內容；事情；問題
What's the matter.怎么了？

521.may(助)可能
She may be a nurse.她可能是個護士。

522.May(名)五月
M需大寫
My mother's birthday is on May 14th.我媽媽的生日是五月十四日。

523.maybe(副)可能、也許
Maybe you'll have better luck next time.也許下次你的運氣會好一點。

524.meal(名)餐、飯食
I had a solid meal.我飽食了一頓。

525.mean(形)卑劣的、鄙陋的(動)意思
(形):That was a mean trick!那是一個卑劣的詭計！
(動):What do you mean?你的意思是什么？

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

527.medicine(名)醫學、醫術；內服藥
Why did the patient refuse to take the medicine?那個病人為什么不肯服藥?

528.medium(名)媒介；手段、方法
Air is a medium for sound.空氣是聲音的傳播媒介。

529.meet(動)遇見、碰見
不規則變化met, met
I met her at the park.我在公園遇見了她。

530.meeting(名)集會、會議
Mr. White isn't here. He's at a meeting.懷特先生不在這兒，他在開會。

531.menu(名)菜單
Let us see what is on the menu today.讓我們看看今天菜單上有些什么菜。

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

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

534.million(形)百萬的(名)百萬
(形):There are five million permanent residents in the city.這個城市有五百萬常住居民。
(名):I have millions of CDs.我有數以百萬計的CD。

535.mind(名)記憶、回憶(動)留心、注意
(名):It completely slipped my mind.對此我一點也記不起來了。
(動):Mind the wet paint.當心油漆未干。

536.minute(名)分
I'll be back in a minute.我馬上就回來。

537.Miss(名)小姐
M需大寫
Miss Brown is a popular teacher.布朗小姐是位廣受歡迎的教師。

538.miss(動)失誤；錯過；思念
The hunter fired at the deer but missed.獵人向鹿開了槍，但未打中。

539.mistake(名)錯誤(動)弄錯
不規則變化mistook, mistaken
(名):Tom didn't make a single spelling mistake in his composition.湯姆在這篇作文里一個詞也沒拼錯。
(動):You mistook my meaning entirely.你完全誤會了我的意思。

540.modern(形)近代的、現代的
In the afternoon, they went to an exhibition of modern art.他們下午去參觀了現代藝術展。

541.moment(名)瞬間、片刻
Wait a moment. She's coming.請稍等，她馬上來。

542.Monday(名)星期一
M需大寫
We were very busy last Monday.上星期一我們很忙。

543.money(名)錢、貨幣
Do they accept French money?他們接受法國貨幣嗎?

544.monkey(名)猴、猿
There are many monkey in the zoo.動物園里有很多猴子。

545.month(名)月、一個月的時間
She flew to Japan last month.上個月她搭飛機去日本了。

546.moon(名)月亮
The moon has risen.月亮升起來了。

547.more(形)數目更多的；更佳的
He has more chance than ever.他從來沒有過這樣的大好機會。