1. clothes, cloth, clothing
clothes统指各种衣服，谓语动词永远是复数， cloth指布，为不可数名词 clothing 服装的总称，指一件衣服用a piece of, an article of
2. incident¹, accident
incident指小事件, accident指不幸的事故He was killed in the accident.
3. amount, number
amount后接不可数名词， number后接可数名词 a number of students
4. family, house, home
home 家，包括住处和家人，house房子，住宅，family家庭成员. My family is a happy one.
5. sound, voice, noise
sound自然界各种各样的声音，voice人的嗓音，noise噪音I hate the loud noise outside.
6. photo, picture, drawing
photo用照相机拍摄的照片，picture可指相片，图片，电影片，drawing画的画
Let's go and see a good picture.
7. vocabulary, word
vocabulary词汇，一个人拥有的单词量，word具体的单词He has a large vocabulary.
8. population, people
population人口，人数，people具体的人 China has a large population.
9. weather, climate
weather一天内具体的天气状况，climate长期的气候状况 The climate here is not good for you.
10. road, street, path, way
road具体的公路，马路，street街道，path小路，小径，way道路，途径
take this road; in the street, show me the way to the museum.
11. course, subject
course课程（可包括多门科目），subject科目（具体的学科）a summer course
12. custom, habit
custom传统风俗，习俗，也可指生活习惯，后接to do， habit生活习惯，习惯成自然，后接of doing. I've got the habit of drinking a lot.
13. cause, reason
cause 指造成某一事实或现象的直接原因，后接of sth./doing sth，reason用来解释某种现象或结果的理由，后接for sth./doing sth. the reason for being late
14. exercise, exercises, practice
exercise运动，锻炼（不可数），exercises练习（可数），practice（反复做的）练习
Practice makes perfect.
15. class, lesson
作"课"解时,两者可以替换.指课文用lesson. 指班级或全体学生用class. lesson 6; class 5
16. speech, talk, lecture
speech指在公共场所所做的经过准备的较正式的演说，talk日常生活中的一般的谈话，讲话，lecture学术性的演讲，讲课 a series² of lecture on…
17. officer, official
officer部队的军官，official政府官员 an army officer
18. work, job
二者均指工作。work不可数，job可数 a good job
19. couple, pair
couple主要指人或动物，pair多指由两部分组成的东西 a pair of trousers
20. country, nation, state, land
country侧重指版图，疆域，nation指人民，国民，民族，state侧重指政府，政体，land国土，国家 The whole nation was sad at the news.
21. cook, cooker
cook厨师，cooker厨具 He is a good cook.
22. damage, damages
damage不可数名词, 损害，损失; damages复数形式, 赔偿金 $900 damages
23. police, policeman
police警察的总称，后接复数谓语动词，policeman 指某个具体的警察 The police are questioning everyone in the house.
24. problem, question
problem常和困难连系，前面的动词常为think about, solve, raise，question常和疑问连系，多和ask, answer连用
25. man, a man
man人类，a man一个男人 Man will conquer³ nature.
26. chick, chicken
二者均可指小鸡，chicken还可以当鸡肉 The chicken is delicious.
27. telegram⁴, telegraph
当电报解时，telegram指具体的，telegraph指抽象的 a telegram, by telegraph
28. trip, journey, travel, voyage
travel是最常用的，trip指短期的旅途，journey指稍长的旅途，voyage指海上航行a three-day trip
29. sport, game
sport多指户外的游戏或娱乐活动，如打球，游泳，打猎，赛马等；game指决定胜负的游戏，通常有一套规则 His favorite sport is swimming.
30. price, prize
price价格，prize奖，奖品，奖金 win the first prize The price is high/low.
31. a number of, the number of
a number of许多，谓语动词用复数。the number of…的数目，谓语动词用单数。The number of students is increasing.
32. in front of, in the front of
in front of范围外的前面，in the front of范围内的前面 In the front of the room sits a boy.
33. of the day, of a day
of the day每一天的，当时的，当代的， of a day暂时的，不长久的 a famous scientist of the day
34. three of us, the three of us
three of us我们（不止三个）中的三个，the three of us我们三个（就三个人）The three of us---Tom, Jack⁵ and I went to the cinema.
35. by bus, on the bus
by bus表手段，方式，不用冠词，on the bus表范围 They went there by bus.
36. for a moment, for the moment
for a moment 片刻，一会儿，for the moment暂时，一时 Thinking for a moment, he agreed.
37. next year, the next year
next year将来时间状语，the next year过去将来时间状语
He said he would go abroad the next year.
38. more than a year, more than one year
more than a year一年多，more than one year超过一年（两年或三年等）
39. take advice, take the(one's) advice
take advice征求意见，take the advice接受忠告 He refused to take the advice and failed again.
40. take air, take the air
take air传播，走漏，take the air到户外去，散步 We take the air every day.
41. in a word, in words
in a word总之，一句话， in words口头上 In a word, you are right.
42. in place of, in the place of
in place of代替，in the place of在…地方 A new building is built in the place of the old one.
43. in secret, in the secret
in secret秘密地，暗自地，偷偷地，一般用作状语；in the secret知道内情，知道秘密，
一般用作表语 My mother was in the secret from the beginning.
44. a girl, one girl
a girl可泛指所有女孩, one girl一个女孩 Can one girl carry such a big box?
45. take a chair, take the chair
take a chair相当于sit down坐下，take the chair开始开会
46. go to sea, by sea, by the sea
go to sea当海员，出航，by sea乘船，由海路， by the sea在海边 go by sea
47. the doctor and teacher, the doctor and the teacher
the doctor and teacher指一个人，既是医生又是老师，the doctor and the teacher两个人，一个医生和一个老师 the doctor and teacher is
48. in office, in the office
in office在职的，in the office在办公室里 He is in office, not out of office.
49. in bed, on the bed
in bed卧在床上，on the bed在床上 The book is on the bed. He is ill in bed.
50. in charge of, in the charge of
in charge of管理，负责照料， in the charge of由……照料 He is in charge of the matter. The matter is in the charge of her.
51. in class, in the class
in class在课上，in the class在班级里 He is the best student in the class.
52. on fire, on the fire
on fire着火,on the fire在火上 Put the food on the fire. The house is on fire.
53. out of question, out of the question
out of question毫无疑问的，out of the question不可能的
54. a second, the second
a second又一，再一，the second第…… He won the second prize.
55. by day, by the day
by day白天，by the day按天计算 The workers are paid by the day.
56. the people, a people
the people指人，a people指民族 The Chinese is a peace-loving people.
57. it, one
it同一物体，one同类不同一 I lost my pen. I have to buy a new one.
58. that, this
that指代上文所提到的，this导出下文所要说的 I was ill. That's why…
59. none, nothing, no one
none强调有多少，nothing, no one强调有没有，nothing指物，no one指人
--- How many…/How much…? --- None.
60. anyone, any one
anyone指人，不能接of，any one指人物均可，可接of any one of you
61. who, what
who指姓名或关系，what指职业或地位 What is your dad? He is a teacher.
62. what, which
what的选择基础是无限制的，which在一定范围内进行选择
Which do you prefer, bananas or apples?
63. other, another
other后接名词复数，another后接名词单数 other students, another student
64. not a little, not a bit
not a little非常，not a bit一点也不 I'm not a bit tired. 我一点儿也不累。
65. many, much, a lot of
many和可数名词连用，much和不可数名词连用，a lot of可数，不可数均可，但不用于否定句 I haven't many books.
66. much more…than, many more…than
much more…than后接形容词或不可数名词，many more…than后接可数名词 many more people, much more water, much more beautiful
67. no, not
no=not a/any no friend=not a/any friend no water=not any water
68. no more than, not more than
no more than相当于only，仅仅，只有，not more than 至多，不超过
69. majority, most
majority只能修饰可数名词，most可数不可数均可 the majority of people
70. by oneself, for oneself, to oneself, of oneself
by oneself单独的，独自的，for oneself为自己，to oneself供自己用的，of oneself 自行的，
自动的 The door opened of itself.
71. at all, after all
at all根本，全然, after all到底，毕竟 After all he is a child.
72. tall, high
tall常指人或动物，high常指物体 He is tall.
73. fast, quickly
fast侧重于指人或物体具有运动速度快的特点，quickly侧重指某事完成或发生的快 run fast, answer the question quickly
74. high, highly⁶
high具体的高，highly抽象的高，高度的 think highly of
75. healthy, healthful
healthy健康的，健壮的，healthful有益于健康的 healthful exercise
76. sleeping, asleep, sleepy
sleeping正在睡觉，asleep睡着，熟睡，只能做表语，sleepy困的，有睡意的
a sleeping baby The baby is asleep. I'm sleepy.
77. gold, golden
gold指真金制品，golden指金色的，但金鱼用gold fish a gold ring
78. most, mostly
most用于表感受的肯定句中，相当于very，当大部分，大多数解时是形容词或名词，
mostly大部分,是副词 most people, the people are mostly…
79. just, very
just表强调时是副词，作状语，very表强调时是形容词，用作定语 the very man, just the man
80. wide, broad
wide侧重于一边到另一边的距离，broad侧重于幅面的宽广broad shoulders
81. real, true
real真的，真实的，指的是事实上存在而不是想象的，true真的，真正的，指的是事实和实际情况相符合 real gold, a true story
82. respectful⁷, respectable
respectful尊敬，有礼貌，respectable可敬的，值得尊敬的 be respectful to the aged⁸
83. outwards¹⁰, outward⁹
二者均可用作副词，表示向外，外面，outward还可用作形容词 an outward voyage
84. pleasant, pleased, pleasing
pleasant常用作定语，pleased, pleasing常用作表语，pleased主语常为人，
pleasing主语常为物 a pleasant trip The trip is pleasing.
85. understanding, understandable
understanding明白事理的，能体谅的，understandable 可理解的，能够懂的
an understanding girl, an understandable mistake
86. close, closely¹¹
close接近，靠近，closely紧紧地，紧密地 closely connected, stand close
87. ill, sick
ill做表语，sick定，表均可 a sick boy
88. good, well
good形容词，well副词，但指身体状况是形容词 He is well again.
89. quiet, silent¹², still
quiet安静的，可以发出小的声音，silent不发出声音，但可以动，still完全不动，完全无声响 He stand there still. 他站在那儿，一动不动，也不说话。
90. hard, hardly
hard努力，hardly几乎不 work hard I can hardly believe it.
91. able, capable¹³
able与不定式to do连用，capable与of连用 He is capable of doing…
92. almost, nearly
二者均为"几乎,差不多" 和否定词连用用almost almost nobody
93. late, lately
late迟，晚，lately最近，近来 I haven't seen him lately.
94. living, alive, live, lively
living, alive, live均为活着的，living定表均可，alive定表均可，定语后置，live只能做定语，lively意为活波的 all the living people=all the people alive
95. excited, exciting
excited使人兴奋的，exciting令人兴奋的 I'm excited. The news is exciting.
96. deep, deeply¹⁴
deep具体的深，deeply抽象的深，深深地 deeply moved, dig¹⁵ deep
97. aloud, loud
aloud出声地，loud大声地 read aloud(出声地读)
98. worth, worthy¹⁶
二者均为值得，worth后接doing，worthy后接to be done, of being done
It is worth visiting. = It's worthy to be visited. = It's worthy of being visited.
99. bad, badly
bad形容词，badly副词，不好，但与need, want, require连用为"很，非常" go bad
I need the book badly.
100. before long, long before
before long不久以后，long before很久以前 not long before = before long

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