Unit2 Healthy eating单词课堂课件（30张）

(共30张PPT)
单词课堂
人教
B3U2
目录
CONTENTS
balance
一词多义
熟词生义
01
benefit
搭配
05
sign
02
combine
06
03
04
limit & limited
strength
一词多义
一词多义
一词多义
搭配
一词多义
词族
balance
[C] 天平；秤：
Weigh it on the balance.
名词
[U] [常用单数] 平衡；均衡：
keep / lose one’s balance
Athletes need a good sense of balance.
I think it’s important to have a balance between study and a social life, so I’m going to join a few clubs. 人教⑦ – 5
[C] [常用单数] 余额；余款：
I have a balance of about $50,000 in my savings account.
They were due to pay the balance on delivery.
【重要搭配】
on balance 总的说来：
On balance, I think we made the right decision.
balance名词动化
vt & vi (使) 保持平衡；(使) 均衡：
The hospital needs to balance the budget each year.
Hobbies help people balance between work and play.
balance语义网络
天平
balance
基本义
词源义
抽象的平衡
账户上的平衡
n 天平；秤
n 平衡
n 余额；余款
v 使保持平衡 / 均衡
sign n
[C] 符号：
a plus sign
[C] 指示牌；标记：
a road / traffic sign
The sign says “No smoking”.
[C] (头、手、眼等的) 示意 动作；手势：
He gave / made a thumbs-up sign.
sign language
[C] & [U] 迹象；征兆：
The rainy weather showed no sign of improving.

vt & vi
签 (名)；签字 (于信、文件等)：
sign an agreement / a contract
示意；以手势表示 (signal)：
The teacher signed me to enter.
sign up (for) 报名参加 (课程等)；sign up for the course in advance
I’m ready to sign up for the mid July group.
sign 名词动化
sign语义网络
符号
sign
词源义
刻有符号的牌子
某事要发生的符号
用头、手、眼等作出的一些动作“符号”
n 指示牌
n 迹象；征兆
标记名字“符号”
v 签（名）；签字
n 手势；示意动作
v 示意；以手势表示
strength
构词法：
deep → depth → deepen
long → length → lengthen
strong → strength → strengthen
strength n
[U] 体力；力气：
The days are gone when physical strength was all you needed to make a living. 天津
Practising Chinese kung fu can not only build up one’s strength, but also develop one’s character. 浙江
[U] 意志力：
inner strength / strength of will
I hope you have / find the strength to start all over again.
[U] 实力：
Political power depends upon economic strength.
[C] 优点；长处：
Each of us has our own strengths
and weaknesses. 浙江
[C] & [U] 强度；浓度
【重要搭配】
go from strength to strength
The company has gone from strength to strength since it was established five years ago.
strength的语义网络
力量
（基本义）
人身体的“力量”
人内在的“力量”
体力；力气
意志力
实力
强度；浓度
优点；长处
国家等集体的“力量”
优于他人的“力量”
物体或液体的“力量”
由个体到群体
由具象到抽象
由表及里
由人到物
基本义
词汇拓展
strengthen vt & vi 加强；巩固：
The wind was strengthening.
I believe that this magazine will surely strengthen our ties.
反 weaken
strength加后缀-en变成动词
名词 [C]
limit
界限；边界：
in the city limits
限度；限制：
a time / speed limit
Even below the drinking limit, driving will be affected. 福建
极限：
The limits of a person’s intelligence are fixed at birth, but whether he reaches these limits will depend on his environment. 安徽
The EU has set strict limits on levels of pollution.
【重要搭配】
within limits 在某种范围内；适度地：
I’m willing to help, within limits.
vt 限制；限定：
I believe teaching should not be limited to the classroom.
I limit myself to two cups of coffee a day.
借助名词来理解和学习动词的释义、用法和搭配
limit 名词动化
limit 语义网络
界限
limit
基本义
具体的界限
抽象的界限
最大程度上的界限
n 界限；边界
n 限度；限制
n 极限
vt 限制；限定
【limit 词族】
limited adj 有限的；不多的：
ABC Company Limited / ABC Co., Ltd.
This dictionary uses a limited number of words, around 2,000, in its definitions.
The amount of money we have is limited.
过去分词形容词表示被动含义
limiting adj 限制性的:
Lack of cash is a limiting factor.
现在分词形容词表示主动含义，注意与limited的区别
limitation n [U] & [C] 限制；局限：
the limitation of nuclear weapons 核武器的限制
limitless adj 无限 (制) 的:
limitless possibilities 无限的可能性
limit + -ation
limit + -less
翻译下面的句子。
新鲜空气对我们的健康有好处。
The fresh air _____________ our health.
is of benefit to
benefits
is good for
benefit vt & vi 有益于；受益：
The rain will benefit the crops greatly.
Today we benefit from countless inventions and innovations. 江苏
I am sure everyone will benefit a lot from this activity. 陕西书面表达
sth benefit sb / sth
sb benefit from
n [C] & [U] 利益；益处：
There are certainly benefits of using a star in a film.
【重要搭配】
be of benefit to 对……有益 (be beneficial to):
Scientific research is of great benefit to mankind.
be of + 抽象名词 = be + 对应的形容词
for sb’s benefit / for the benefit of sb 为了某人 (的利益)：
The money is to be used for the benefit of the poor.
The books are very useful (= are of great use) to English learners.
Friends are very important (= are of great importance) to everyone.
vi & vt (使) 化合；(使) 混合：
Steel is produced by combining iron with carbon.
Combine the eggs and the flour.
combine v
combine既可以指物理属性发生变化的化合又可指物理属性未发生变化的混合。
词源：combine由com- (together) + -bin (两个) 构成，词源同two (如bicycle, balance)。 基本义是“两者合在一起”。
vi & vt (使) 结合；(使) 组合：
Theory must be combined with practice.
vt 兼备；兼顾：
The hotel combines comfort and convenience.
Like her mother Marie Curie, Irene combined family and career.
【词汇拓展】
combination n 结合 (体)；联合 (体)；混合
combine的语义网络
combine
合在一起
(基本义)
vi & vt (使) 化合；(使) 混合
vi & vt (使) 结合；(使) 组合
(使) 抽象的事物“合在一起”
(使)具体的物质“合在一起”
vt 兼备；兼顾
把两件或以上的事或特点“合在一起”