New words and expressions
puma n. 美洲狮
spot v. 看出，发现
evidence n. 证据
accumulate v. 积累，积聚
oblige v. 使...感到必须
hunt n. 追猎；寻找
blackberry n. 黑莓
human being 人类
corner v. 使走投无路，使陷入困境
trail n. 一串，一系列
print n. 印痕
cling (clung, clung ) v. 粘
convince v.使...信服
somehow adv. 不知怎么搞地，不知什么原因
disturb v. 令人不安
Step 2 把单词放课文中过一遍，课文中有不认识的单词记得摘录出来
Pumas are large, cat-like animals which are found in America. When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London, they were not taken seriously. However, as the evidence began to accumulate, experts from the Zoo felt obliged to investigate, for the descriptions given by people who claimed to have seen the puma were extraordinarily similar.
The hunt for the puma began in a small village where a woman picking blackberries saw 'a large cat' only five yards away from her. It immediately ran away when she saw it, and experts confirmed that a puma will not attack a human being unless it is cornered. The search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening. Wherever it went, it left behind it a trail of dead deer and small animals like rabbits. Paw prints were seen in a number of places and puma fur was found clinging to bushes. Several people complained of 'cat-like noises' at night and a businessman on a fishing trip saw the puma up a tree. The experts were now fully convinced that the animal was a puma, but where had it come from? As no pumas had been reported missing from any zoo in the country, this one must have been in the possession of a private collector and somehow managed to escape. The hunt went on for several weeks, but the puma was not caught. It is disturbing to think that a dangerous wild animal is still at large in the quiet countryside.
Step 3让我们再进一步认识这些单词吧；特别注意他们的同/近义词及例句应用；推荐自己也模仿着造句：）
1.spot v. 看出，发现
英文释义
To detect or discern, especially visually; spy.
同/近义词
pick out / see / recognize / catch sight of
例句应用
A tall man is easy to spot in the crowd.
He has good eye for spotting mistakes. 他有敏锐的识别错误的能力。
来做个比较
spot(v.) = see:强调结果、辨别出、看见、识别、发现。
find 强调发现的结果。
find out 查出事实真相。
discover 做出重大发现
notice 注意到
observe 观察
watch 观察活动中的人或画面
其他常用词性
spot n. 斑点 Ex: There is a white spot on the shirt.
常用词组
on the spot
1、at once, immediately 立刻，马上
Ex: Anyone breaking the rules will be asked to leave on the spot.
2、at the place of the action 在现场
Ex: Wherever she is needed , she is quickly on the spot.
2.evidence [u]n. 证据
英文释义
A thing or things helpful in forming a conclusion or judgment
同义词
evidence=proof
例句应用
When the police arrived, he had already destroyed the evidence.
常用词组
in evidence 显而易见的
Ex: He was in evidence at the party.
3.accumulate vt,vi. 积累，积聚
英文释义
vt.To gather or pile up; amass. vi. To mount up; increase.
同/近义词的比较
1）accumulate 强调积累的过程
Ex: As the evidence accumulates, experts from the zoo felt obliged to investigate.
2）gather vt. 聚集，把某人召集在某处
3）collect v.收集，采集
4) assemble vi.集合，集会， vt. 装配
5) hoard v.大量地贮存 hoard up= store up
Ex: The squirrel hoards up nuts for the cold winter.
6) amass vt.积聚（主要用于诗歌和文开云kaiyun(中国)作品）
4.oblige v. 使...感到必须
英文释义
To constrain by physical, legal, social, or moral means.
常用词组
feel obliged to do sth. 感觉有必要做某事
be obliged to do sth 被迫做某事
Ex: 1)She was obliged to go. 她不得不走。
2)The police obliged him to leave. 警方强迫他离开。
5.hunt n. 追猎；寻找
英文释义
The act or sport of hunting;A diligent search or pursuit
同/近义表达的比较
run after 强调追赶、追求.
seek 追寻（梦想，理想） = pursue
chase 追赶.
search 搜寻某处为了寻找到某人或某物
6.corner v. 使走投无路，使陷入困境 n.角落
英文释义
vt.To place or drive into a corner;vi.To come together or be situated on or at a corner;
n. The area enclosed or bounded by an angle formed in this manner
常用词组(注意介词的用法)
at the corner of the street
in the corner of the room
on the corner of the desk
be cornered 被逼得走投无路(常用于被动语态)
Ex:
1）The thief was cornered at last.
2）The problem cornered me. 这个问题把我难倒了。
7.trail n. 一串，一系列 vt.跟踪, 追踪(=follow)
英文释义
n.Something that is drawn along or follows behind; a train
vt.To follow the traces or scent of;to follow the course taken by; pursue:
其他常用词性
trail=follow vt. 跟踪
Ex: The police trailed the criminal to the place where he was hiding.
8.cling (注意cling的过去式及过去分词为 clung ) vi.粘附
英文释义
vi.To hold fast or adhere to something, as by grasping, sticking, embracing, or entwining;To remain emotionally attached; hold on
近义词
stick 粘住 （stick to 坚持 sticky adj. 粘的）
例句应用
She is always clinging to her mother.
He clung to the hope that he would succeed.(抱有，怀有)
9.convince vt. 使...信服
英文释义
To bring by the use of argument or evidence to firm belief or a course of action
常用词组
convince sb. of sth 使sb相信sth
be convinced that 确信， 承认（和宾语从句that 搭配使用）
sb be convinced sb相信（没有宾语的情况下要采用主系表结构）
10.somehow adv. 不知怎么搞地，不知什么原因
英文释义
In a way not specified, understood, or known.
近义表达
by some means, in some way, for some reason unknown
区分记忆
somewhat =a little adv.稍微, 有点, 有些
11.disturb v. 令人不安
英文释义
To break up or destroy the tranquillity or settled state of；To trouble emotionally or mentally; upset
比较
disturbing 令人不安的 disturbed 感到不安的
若对某事/某人感到不安，就用be disturbed的结构，主语一般都是人；
如果某事或某人本身让别人觉得不安的话，就用sth./sb. is disturbing 的结构
Step 4 Fighting~再做些练习，一定要坚持：）
