- A+
寒假方案里有一件事必不可以少，那就是背单词。
修改按字母次序，每天为我们推送必背3500单词系列。不只有单词，和单词有关的要点短语和句型也同时排出来了哦。
今日是首字母B的单词，看看哪些单词是你没记住的，必定要背到熟练哦。
1. back adv.回（原处）;向后 adj.后边的 n. 不和，后部；背
back and forth 来回，往复
back to back 背靠背
look back 回想
put back 放回去
turn one’s back on 避开，不答理
2. backward adv.向后地
backward and forward 来来回回
3. baggage n.行李
a piece of/an article of baggage 一件行李
4. balance
1) n. ① 平衡
keep a balance (between A and B)
lose one’s balance
disturb the balance of one’s mind
② 余额 (常用奇数）
check your bank balance
③ 欠款（常用奇数）
The balance of 500 yuan must be paid within 90 days.
be/hang in the balance 不决的， 悬而未决的
catch/throw sb. off balance 使...…失掉平衡； 使…...不知所措
on balance 总的来说
2）v. ①保相等衡
~（sth）on sth
He balanced the cup on her knee.
②平等注重
balance A with/and B
balance home life with career
③比照权衡
balance A against B
balance the cost against its benefit
balanced adj.平衡的
be on a balanced diet
5. ban n.禁令 v. 阻止，撤消
a ban on smoking 禁烟令
place… under ban 对…...加以阻止
ban sb. from sth./ doing 阻止或人做......
6. bar
1) n. 条，块，妨碍
a bar of chocolate/soap
Being a woman was a bar to promotion（提升）.
2) vt. 封堵，阻挡
All the doors and windows were barred.
bar sb. from...
bar players from drinking
7. bargain n.（经还价还价之后）成交的产品；贱卖货 v. 还价还价
Those shoes are a real bargain at such a low price.
bargain with sb about /over sth
8. base n. 根据地，基地 v.以......为基础, 把基地设在......
base sth on/upon sth 使......以...…为基础
His book is based on a true story.
be based in 以...为基地,把基地设在
The toy company is based in Guangzhou.
basic adj 根柢的
basic knowledge/skills
basically adv.根柢上
9. basis (复数 bases ) n.
1）基础，要素
form the basis of…
2) 基准，原则
on a regular /permanent basis 以守时的/耐久的方法
3) 缘由，缘由
on the basis of…
Some videos were banned on the basis of violence.
10. bath n.洗澡;浴室;澡盆
have/take a bath
bathe v.洗澡,游水
be bathed in …沉溺在,沐浴着（光线）
bathroom n.浴室
11. bear(bore, born/borne) v.
1）承受 (分量)
The ice is too thin to bear your weight.
2) 担负, 承担
bear the cost/
burden/responsibility
3）忍耐;忍耐 （常用于疑问句、否定句，与can, could 连用） bear to do/doing
bear…in mind 记住......
12. beat v. (beat ,beaten) 接连有节奏的敲击； 打败
My heart is beating faster than usual.
Waves are beating the shore.
He beat me in the game.
13. before
prep. 在…之前，先于
conj. 在…早年；在…之前
adv. 早年；在前
It will be +段时刻+before+ do/does…要过多久才…
It was +段时刻+before+ did…没过多久就…
14. beg 恳求，恳求
beg—begged—begged—begging
beg sb. to do 恳求/恳求或人做某事
I beg your pardon. 对不住/请宽恕/请再讲一遍（降调）
15. begin—began—begun—beginning
begin with=start with 以…初步
to begin with=to start with (刺进语)首要、第一
I don’t like living here. To begin with, the room is far too small.
16. beginning n.初步，初步
at the beginning of…
in the beginning= at first
17. behave v.体现
He behaved as if nothing had happened.
behave
badly/well/like a true gentleman
behave oneself 体现稳当，有礼貌
well/badly behaved children
18. behavior n. 不可以数
good/bad behavior
be on your best behavior 尽量体现稳当
19. behind prep.在......后边；晚于 adv. 在后边
drop/fall behind 落后
leave sb./sth. behind 遗落、忘带
20. belief n.（不可以数）
1）信赖，决心
I admire his belief in what he is doing.
2) 观点，崇奉 （不可以数）
He acted in the belief that he was doing good.
There is a general belief that things will soon get better.
3) 崇奉 （可数 beliefs） religious/ political beliefs
beyond belief 难以相信
to the best of one’s belief 尽其所知
21. believe v.信赖，认为
believe it or not (刺进语)信不信由你
It is believed that he is a good teacher. =He is believed to be a good teacher.
22. belong 归于
belong to 归于（无被逼）
The house belonging to her is under repair.
23. bend v. 曲折、折腰、伏案
bend—bent—bent
She was bent over her desk writing a letter. 她正伏案写信。
24. benefit
1) n. 优势，优点（不可以数）
She didn’t get much benefit from her staying abroad.
be of benefit to...=be beneficial to ... = to one’s benefit 对或人有利
for one’s benefit = for the benefit of sb. 为了协助.../为了或人的利益
2） vt./ vi. 使获益；获益
benefit sb./ sth
benefit from/ by...
beneficial adj. 有利的，有用的
be beneficial to...
25. best adj. 最佳的 n. 最佳的人，最佳的事物；最佳状况
do/try one’s best to do 尽全力做
make the best of… 尽量使用......
all the best （函件结语）悉数顺畅、万事满足
26. better
had better do… 最佳做…
否定：had better not do
be better worth reading 更值得读
be better known 更闻名的
27. beyond 超出、跨越
beyond one’s imagination/description 难以愿望/描绘
beyond one’s power 超出或人才能规模
beyond my wildest dreams 做梦也没想到
28. bid –bid- bid- bidding v. 出价，投标 n. 投标
bid for sth.
I bid 2000 dollars for the painting. 我出价20000美元买这幅画。
The highest bid for the picture was 20000. 这幅画的最高出价是两万
29. birth n.出世，诞生
at birth 出世时
give birth to 生下，孕育了
30. biscuit n.饼干
some chocolate biscuits
31. bit n.一点，少量
1) a bit of+不可以数n.= a little +不可以数n.
He can speak a bit of French.
2) a bit/a little +比照级
a bit more slowly
3) not a bit=not at all 一点儿也不、毫不
32. blame n.责怪 v.责怪，归咎于
1）be to blame 大约遭到责怪（主动表被逼）
2) blame sb. for doing→sb. be blamed for …
33. blank
1) n. 空白处，空格，(回想中的)空白,忘掉
fill in the blanks
My mind was a blank and I couldn’t remember her name.
2) adj. 空白的，无装饰的，无图像的，不了解的，没表情的,空无的
a blank form/ wall
a blank expression
Suddenly my mind went blank.
34. blind adj.瞎的，盲意图
be blind to 对...…视若无睹、视若无睹 =turn a blind eye to
35. blow v.(blew blown) 吹、刮 n.吹，冲击
blow down 吹倒
blow up 爆破、摧毁
give sb. a blow 给或人冲击
36. board n.木板，布告牌，董事会 v.登上
on board 在船（车、飞机）
board a train 上火车
37. book n.书 v. 预定（车、船）票
book a room/ ticket
38. bored adj.感到无聊的
be bored with... /to death.
boring adj.令人无聊的
a boring job /book/man
39. bother vt./vi.
1) 花费时刻精力做某事（常用于否定句，疑问句中）
① bother with/ about sth
---Shall I wait? ---No, don’t bother.
It’s not worth bothering with an umbrella.
② bother to do
He didn’t even bother to let me know he was coming.
③ bother doing
Why bother asking if you are not really interested?
2) 给...构成费事，苦楚 使...烦恼，担忧
① bother sb with/ about...
I don’t want to bother her with my problems.
---I’m sorry he was rude to you.
--- It doesn’t bother me.
② bother sb. that...
Does it bother you that she earns more than you?
③ bother sb. to do...
It bothers me to think of her alone at home.
3) 打扰 插话
bother sb
Sorry to bother you, but...
be bothered about sb./ sth 认为...重要 关怀...
I’m not bothered about what he thinks.
bother n. 费事 困难（不可以数）
---Thanks for your help. --- it was no bother.
put sb. to bother
get sb. /oneself into bother给或人添费事
40. bottom n.底部；止境
at the bottom of…
from the bottom of one’s heart
41. break—broke –broken
break out （战争、火灾、疾病等）迸发
break down （车、机器等）坏掉、出毛病；分化；（身体）垮掉；
break in 打断；闯入
break up 破碎；（联络）决裂
break away from 脱节、脱离
42. breath n.呼吸
hold one’s breath 屏住呼吸
take a deep breath 深呼吸
out of breath 上气不接下气
breathe v.呼吸
43. bring vt. 带来；促进；致使；使或人处于某种情况或境地
bring up 提出；教育；抚育；呕出
bring down 降低；打倒
bring about 带来
bring in 引入
44. broken adj.坏的；破碎的；糟糕的
speak in broken English
a broken marriage
45. budget n.核算
within / over budget 在核算内/超出核算
on a (tight) budget 短少钱 困顿
budget vt./vi.核算
~ sth for ... 将...编入核算
~$1,000,000 for education spending
~ for 存钱 编核算
~ for a holiday abroad
46. build—built—built v. 建筑；缔造
build up 增进、增强
47. burn—burned—burned/--burnt—burnt 燃烧；晒黑、伤
burn down 焚毁
burn…to the ground= completely destroyed 夷为平地
get burnt 被晒伤
a burning candle 燃烧的蜡烛
48. burst v. 突发；爆破
burst—burst—burst
burst out laughing/ crying= burst into laughter/ tears 俄然大笑起来/痛哭起来
49. bury v.埋葬；躲藏
bury—buried—buried—burying
bury one’s face in the hands 手捂着脸
bury oneself in… = be buried in… 聚精会神于......
50. business n. 生意；责任；（本分）作业
on business 出差
do business with sb.
Business is business. 公务公办。
It’s none of your business. 与你无关。
mind your own business 管好你自个的事
51. busy adj.忙的；繁忙的
be busy with sth.
be busy (in) doing 忙于做......
busily adv.
52. but conj.可是 prep.除了
not…but… 不是…而是
we have no choice but to wait. 除了等候别无选择。
We can do nothing but wait. 除了等候啥也不能做。
but for 要不是、若没有（引导含虚拟口气的语句）
But for your help, I would have failed.
53. by
by bus/car/plane/air/train/ship… 乘轿车/小轿车/飞机/火车/船
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