21.Hold/whole
Hold vt. 持有；保存；抓住/n. 保留；控制
He held his daughter in his arms.
他把女儿抱在怀里。
Whole adj. 完整的；纯粹的/n. 整体；全部
She spend the whole day reading the novel.
她花了一整天的时间读这本小说。
22.Knight/night
Knight n. 爵士；骑士；武士
She and her daughter were saved by that knight.
她和她女儿被那个骑士救了。
Night n. 夜晚，夜间，黑夜
What a cold night!
多么寒冷的夜晚！
23.Know/no
Know v.知道，熟悉，了解
He knew my secret by accident.
他不小心知道了我的秘密。
No adv. 不/ adj. 没有；不是
There are no any other feasible ways.
没有其他可行的方法。
24.Mail/male
Mail n.邮件；邮政/v. 邮寄
I have not received her mail yet.
我还没有收到她的邮件。
Male adj.男的；男子的; 雄性的，公的
There are 10 male students than female students.
男学生比女学生多10人。
25.Meat/meet
Meat n. 肉，肉类（食用）
Some people don't like to eat meat.
有些人不喜欢吃肉。
Meet v. 满足；遇见; (与...)相识/n. 集会
I met him in Guangzhou.
我在广州认识了他。
26.None/nun
None pron. 没有一个（人或事物）；全无/adj. 没有的；一点没有的
It's none of your business.
这不关你的事。
Nun n. 修女，尼姑
She became a nun in this convent a year ago .
她一年前在这个修道院当了修女。
27.One/won
One pron. 一个人；任何人/num. 一；一个
Mr. White has two sisters and one brother.
怀特先生有两个姐妹和一个兄弟。
Won vt. 赢得（win的过去式和过去分词）/n.圆（货币单位）
He won the first prize again.
他又得了一等奖。
28.Pair/pear
Pair n. 一对，一双，一副
Here is a pair of gloves for you.
这是给你的一副手套。
Pear n. 梨树；梨子
There is a good harvest of pears this year.
今年梨丰收。
29.Peace/piece
Peace n. 和平；平静
May the world be peaceful.
愿世界和平。
Piece n. 块；件；篇
He ate two pieces of cake.
他吃了两块蛋糕。
30.Pail/pale
Pail n. 桶；提桶
Fill the pail with water.
把桶装满水。
Pale adj. 苍白的；无力的/ v. 失色；使变苍白
I knew I looked pale and tired at that time.
我知道当时我脸色苍白，疲惫不堪。
31.Plain/plane
Plain adj. 平的；简单的；朴素的/n. 平原
He wore a plain white blouse.
他穿了一件朴素的白色衬衫。
Plane n.飞机；水平
I am afraid to travel by air.
我害怕乘飞机旅行。
32.Read/reed
Read v.阅读，读懂
Reading can boost my confidence.
读书能增强我的信心。
Reed n. 芦苇/ vt. 用芦苇盖
Reeds grow near the water.
芦苇生长在水附近。
33.Right/write
Right adj.对的，正确的/n. 正确；右边
He has only the right hand.
他只有右手。
Write v. 写；写字；书写
He insisted on writing her a letter every day.
他坚持每天给她写一封信。
34.Roll/role
Roll vt. 卷；滚动，转动/n. 卷，卷形物
An apple rolled off the table.
一个苹果从桌子上滚了下来。
Role n. 角色；任务
He played a supporting role in the film.
他在这部电影中担当配角。
35.Root/route
Root n. 根；根源；词根/v. 生根；根除
Learning the roots of words is a good way to remember English words.
学习单词的词根是记忆英语单词的好方法。
Route n. 路线；航线；通道
This is the farthest route home.
这是回家的最远路线。
36.Sail/sale
Sail vi. 航行；启航/n. 帆；蓬
The small boat sailed along the Yangtze river.
小船沿着长江航行。
Sale n./v. 销售；出售
Is everything on sale?
所有东西都打折了？
37.See/sea
See v. 看见；理解；领会
She swore that she had never seen him before.
她发誓说她以前从未见过他。
Sea n. 海；海洋
I want to stay by the sea for a day.
我想在海边呆一天。
38.Sole/soul/Seoul
Sole adj. 唯一的；单独的/n.鞋底；脚底；基础
She is the sole survivor of the shooting accident.
她是这次枪击事故中唯一的幸存者。
Soul n. 灵魂；心灵；精神
His singing lacks soul.
他的歌声缺乏灵魂。
Seoul n.首尔（韩国首都）
39.Some/sum
Some adj. 一些；某个/pron. 一些；若干
Would you like some pop?
要不要来点汽水？
Sum n. 金额；总数/vt. 总结；合计
She needs a sum of money to buy a new house.
她需要一笔钱来买一所新房子。
40.Son/sun
Son n. 儿子；孩子
His son was born in 1992.
他的儿子出生于1992年。
Sun n. 太阳
They run in the sun.
他们在阳光下奔跑。
