人教版高中英语选修七Unit 3 Under the Sea Period One（51张PPT）

(共51张PPT)
Under the Sea
Book 7 Unit 3
Period 1: Vocabulary


Learning tips：
Memorize new words in different ways:



2. Put the words in different contexts to know the exact meanings.

Similar words
Paraphrase
Opposite words
Word formation
Read all the new words and expressions in this unit , try to remember as many as you can,
and we will have a small test
tomorrow.
Words and expressions
snorkel vi. 戴潜水通气管潜泳n.（潜水艇或潜水者的）通气管
aquarium n. 水族馆；水族箱；养鱼缸
anecdote n. 轶事；奇闻
Clancy n. 克兰西（男名）
baleen n. 鲸须
baleen whale 须鲸
annual adj. 每年的；按年度计算的n.年刊；年鉴
migration n. 迁徙；迁居；移居
witness vt. 当场见到；目击n.目击者；证人；证据
accommodation n. 住所；住宿；调解
shore n. 岸；海滨
offshore adv.&adj. 近海（的）；离岸（的）
opposite prep. 在……对面adj. 相对的；相反的
yell vi. 大叫；呼喊n.叫声；喊声
pause vi. & n. 暂停；中止
oar n. 桨；橹
telescope n. 望远镜
teamwork n. 协作；配合
blow-hole n. （鲸鱼的）鼻孔；（隧道的）通风口
dive vi. & n. 跳水（的动作）；潜水（的动作）；俯冲

flee vi. (fled, fled) 逃避；逃跑vt. 逃离
harpoon n. （捕鲸用的）鱼叉
drag vt.拖；拉；扯
depth n. 深（度）；深处
meantime adv. 其间；同时
in the meantime 在此期间；与此同时
lip n. 一片嘴唇；（容器或洞的）边，口
overboard adv. 越过船舷进入水中
urge vt. 催促；极力主张；驱策
abandon vt. 放弃；遗弃；抛弃
shark n. 鲨鱼
?
help (．．．)out 帮助（某人）摆脱困境或危难
relationship n. 关系；血缘关系；交往
conservation n. 保存；保护
iceberg n. 冰山
jog vi. 慢跑 vt.轻推；轻撞
seaside n. & adj. 海边（的）；海滨（的）
net n. 网；网状物；网络
target n. 目标；靶；受批评的对象
tide n. 潮（汐）；潮水；潮流
driftnet n. 流网


dimension n. 维（数）；方面；侧面
reflect vi. 思考vt.映射；反射；思考
pure adj. 纯的；纯粹的；纯洁的
cell n. 细胞；（蜂房的）巢室
aware adj. 意识到的；知道的
be/become aware of 对……知道、明白；意识到……
vivid adj. 生动的；鲜明的；鲜艳的
neat adj. （口）好的；整齐的；匀称的
seaweed n. 海草；海藻
narrow adj. 狭窄的；有限的；狭隘的
flashlight n. 闪光信号灯；手电筒；闪光灯

upside down 上下翻转
suck vt. & vi. 吮吸
sea-slug n. 海蛞蝓
turtle n. 海龟；龟；甲鱼
eel n. 鳗；鳝
sharp adj. 锐利的；锋利的；敏捷的
tasty adj. 好吃的；可口的
giant adj. 巨人的；巨大的n. 巨人；伟人
clam n. 蛤
grey adj. & n. 灰色（的）
scare vt. 恐吓vi.受惊吓

(be) scared to death 吓死了
shallow adj. 浅的；肤浅的；浅显的
steep adj. 陡峭的
boundary n. 界限；分界线
Antarctic adj. 南极的
the Antarctic 南极洲
awesome adj. 使人敬畏的；令人畏惧的
leap vi. & n. (leapt, leaped; leapt, leaped) 跳；跳跃vt. 跳过（障碍）
seal n. 海豹；封条；印章
refund vt. 退还；偿还n.退款
pension n. 养老金；退休金
pensioner n. 领取养老金者

Explanations of some key words and expressions











depth
01
词汇拓展
depth是deep的名词形式
名词











wide deep warm long strong
width depth warmth length strength
构词法拓展


Depth
? [U] & [C] 深 (度)；深处：
30 feet in depth 30英尺深

2. In the depths of my memory, many things I did with my father still live. 在我记忆深处，我与父亲一起做过的很多事仍然历历在目。

具体事物如河水等的深度，也可指抽象事物的深度


? [U] (知识) 渊博；深刻；(感情) 深厚：
1. a man of great depth and insight
具有渊博学识和洞察力的人

2. We have expressed the depth of our gratitude to them. 我们向他们表达了
深深的谢意。
其他抽象事物如知识、情感等的深度


in depth 全面地；深入地；仔细地：

I haven’t looked at the report in depth yet.
我还没有仔细阅读这份报告。

短语拓展


学后检测
一、翻译下列词块。
1.一条10米深的河 __________________
2. 深入的交谈 __________________
3. 海洋深处 _________________
a 10-meter-deep river / a river of 10 meters in depth
an in-depth conversation
in the depths of the ocean / sea











urge
02


词汇拓展
urgent adj.
急迫的；迫切的；紧急的
动词
名词


urge ?
动词
? [正式用语] 驱策；驱赶：
I urged the elephant deeper into the forest.
我赶着大象进到森林的更深之处。
用于较正式的场合或文体


? 催促；力劝 to advise or try hard to persuade sb to do sth：
① urge sb to do sth:
They urged me to eat the strange food. 他们怂恿我吃那种奇怪的食物。

② urge + that ... (should) do sth:
He urged that we (should) take such steps. 他力劝我们采取这些措施。
? 掌握两种常用结构
? 结构②中，that从句要用虚拟语气 (should) do sth


大力推荐；极力主张
to recommend sth. strongly
The situation is dangerous and the UN is urging caution. 局势危急，联合国力主谨慎行事。


名词
n [C] 强烈的欲望；迫切的需要 (desire)：
the urge to do sth.:
Having enough fat and salt in your meals will reduce the urge to snack between meals. 吃饭时摄入充足的脂肪和盐会减少两餐之间想吃零食的欲望。


1. Why has the issue of public apology been so _______________ (urge)?now in the USA?

2. He urged that a conference ________________.
(hold) by December.
urgent
(should) be held
学后检测


03
abandon









【拓展 — 过去分词形容词】
abandoned adj. 被遗弃的；被离弃的；废弃的：
an abandoned farm 废弃的农场
动词


? 放弃 to stop doing or having sth：
Rescuers had abandoned all hope of finding any more survivors. 营救人员对找到更多生还者已不抱任何希望。


? 遗弃 to leave sb, especially sb you’re responsible for：
How could she abandon her own child?
她怎么能遗弃自己的孩子呢？
2. People find all sorts of excuses for abandoning an animal. 人们为遗弃动物找出各种借口。


? 离弃 to leave a place, vehicle etc., especially because it is impossible or dangerous to stay (leave)：
Snow forced many drivers to abandon their vehicles. 雪迫使许多司机弃车而行。


一、选出画线部分的汉语释义。
A. 放弃 (正在做的事或信念等)
B. 遗弃 (某人或物) C. 离弃 (某地或某交通工具)
_____ 1. They decided to abandon the sinking ship.
_____ 2. In each episode (一期节目) of this play, the adventurer is abandoned in a wild area and has to find his way out. (15 北京改)
_____ 3. They wouldn’t have achieved their success if they had abandoned their dreams.
C
B
A
学后检测


04









reflect
动词
【拓展 名词 reflection】


reflect 语义树


? vt & vi 反射 (光、热、声等)：
Without the forest cover, these areas would reflect more heat into the atmosphere.
如果没有森林覆盖，这些区域会向大气层反射更多的热量。



? vt [常用于被动语态] (镜子等) 映出：
Her face was reflected in the mirror. 镜子中映出她的脸。



? vt [通常不用于进行时] 反映：
Mid-Autumn celebrations reflect Chinese cultural traditions. 中秋节庆祝活动反映了中国的文化传统。 外研⑦ – 6



? vi & vt 反思；回想；仔细考虑：
She was left to reflect on / upon the result of her wrong decision. 她被留下来反思自己的错误决定所带来的后果。
重点词块reflect on / upon


一、写出下列句子中reflect的释义。
1. This passage is to tell people to reflect more on life.
________
2. The play to be produced next month aims mainly to reflect the local culture. ________

3. Mirrors reflect light. ________
反思
反映
反射
学后检测


05









narrow
词汇拓展
narrowly adv.
勉强地；差点儿 (没)：
The car narrowly missed a cyclist.
汽车差点儿撞上一位骑自行车的人。
形容词
动 词




narrow
? (宽度等) 狭窄的 反 wide ：
As we set out, I was shocked at how narrow the path was.
出发后，我吃惊地发现这条小路是多么狭窄！
? (心胸、视野等) 狭隘的 / 狭窄的 反 broad ：
narrow-minded 心胸狭隘的
She has a very narrow view of the world. 她的世界观非常狭隘。
? [常用于名词前] 勉强的；好不容易的：
a narrow victory 险胜
形容词


vt & vi (使) 变窄；(使) 变小：
1. He had to narrow his eyes in the strong light of the sun. 在强烈的阳光下，他只得眯着眼睛。
2. Narrow the generation gap
缩小代沟
动词


一、根据narrow的基本义“狭窄的”，试将下列各句中画线部分译成汉语。
1. He was elected by a narrow majority.
_________________
2. What a narrow escape!
_________________
3. He blamed John for the narrow defeat against China. ______________
微弱的多数
死里逃生
惜败
学后检测



06









sharp
形容词
词汇拓展
sharply adv. 急剧地；严厉地
sharpen vt.
削尖；磨快
副词


sharp adj.
? 锋利的；尖的：sharp teeth 锋利的牙齿
(角度、变化等) 急剧的；明显的 sudden and rapid, especially of a change：
a sharp bend 急转弯
a sharp drop / increase in prices 价格急剧下跌 / 上涨



? (感观) 敏锐的；(人) 机灵的 反 dull / stupid ：
She has sharp eyes. 她目光敏锐。
a sharp child 机灵的孩子

(言辞等) 尖刻的；严厉的 (of a person or what they say) critical or severe：
sharp criticism 尖锐的批评
be sharp with sb. 对某人严厉


? 剧烈的；猛烈的：
I felt a sharp pain in my back. 我感到背上一阵剧痛。
? 尖厉的；刺耳的：
Through all the noise came a sharp warning cry. 嘈杂中传来一声尖锐的警告声。


sharp adv. 正 (指时刻)；整：
2 o’clock sharp 两点整

副 词


词汇拓展
sharply adv 急剧地；严厉地：
House prices have risen sharply over the last decade.
过去十年里房价急剧上涨。
speak sharply to sb 斥责某人
sharpen vt
? 削尖；磨快：
sharpen a pencil 削铅笔
? 使提高；使改进：
Debates sharpen one’s wits. 辩论增长才智。


一、写出下列句中画线部分的汉语释义。
1. Dogs have a very sharp sense of smell. _______________
2. The boss can be very sharp with people when she’s busy.
_______________
3. Official figures show a sharp decline in the number of wild animals in the area. _______________

4. We’re meeting at ten-thirty sharp. ____________
很敏锐的嗅觉
对人很尖刻
急剧下降
整十点半
学后检测











reflect
04









depth
01









narrow
05









02
urge









sharp
06









03
abandon
Key words
一词多义
一词多义
一词多义
一词多义
一词多义
Homework :
Memorize all the words in this unit
Look up other new words in the dictionary
Prepare the pre-reading and reading part



Thank you for listening !