1、Where must the pumahave come from？
Pumas are large，cat-like animals which are found in America.
-- Pandas are large cat-like animals whichare found in Asia. (panda n.熊猫)
cat-like 猫一样的， 偷偷摸摸的/ dog-like 狗一样的 / life-like 栩栩如生的
2、When reports cameinto London Zoo that a wild puma had been spottedforty-five miles south of London， they were not takenseriously.
-- 指人：主语 who；宾语 who， whom；定语 whose
-- 指物：that(也可以指人)/ which
-- 时间状语：when / 地点状语：where / 原因状语：why
-- 名词(做主语、宾语等)：关系词用 that 而不是which
-- 时间：when； 地点：where
-- 定语从句中没有 what 这个关系词，但 what 可以引导同位语从句
-- An idea came to her that she might do the experimentin another way.
-- I have no idea what has happened to him。
3、they were not takenseriously(they指代reports)
take sth seriously = deal with sth seriously 认真地对待某事
-- I always take your suggestions seriously.
take sth lightly 草率地对待某事 (lightly adv.轻率地)
-- Don’t take the hotpotato lightly (hot potato n.棘手的问题)
4、However， as the evidence began to accumulate，experts from the Zoo felt obliged to investigate， forthe descriptions given by people who claimed to have seen the puma wereextraordinarily similar.
As 连词：随着， 当...之时
-- the descriptions given by people
-- the story told by the sailor (n.海员，水手， 船员)
-- a book written by Luxun
claim to have done sth 声称曾经做过某事
-- He claimed to have been the manager of thelarge shop.
5、The hunt for thepuma began in a small village where a woman picking blackberries saw 'a largecat' only five yards away from her.
Where a woman picking… 定语从句
-- I still remember the school where Istudied English.
6、It immediately ranaway when she saw it， and experts confirmed that a pumawill not attack a human being unless it is cornered.
Confirm = be sure = be certain (confirm vt.确定)
Unless it is cornered = if it is not cornered(unless conj.如果不， 除非)
-- He will accept the job unless the salaryis too low.
7、The search proveddifficult， for the puma was often observed at one placein the morning and at another place twenty miles away in the evening.
search = hunt
Wherever it went， itleft behind it a trail of dead deer and small animals like rabbits. 把某物留在后面：leave behind
-- Wherever he went，the wound left behind him a trail of blood.(n.血)
8、Paw prints wereseen in a number of places and puma fur was found clinging to bushes. 英文表达方式习惯用被动语态，突出客观事实。而中文则善于运用动作的执行者。
puma fur was found clinging to bushes. (被动)
We found the puma fur clinging to bushes. (主动)
-- clinging to bushes 是现在分词短语做宾补
9、Several peoplecomplained of “cat-like noises' at night and abusinessman on a fishing trip saw the puma up a tree.
complain of/about sth 抱怨某事
-- on the rise 在上升 /on the increase 在增加
-- on the watch 在观看 /on the match 在比赛中
-- on the fishing trip 在钓鱼的途中 / on holiday 在度假
10、The experts werenow fully convinced that the animal was a puma， butwhere had it come from？
Fully(adv.充分地， 完全地)=completely = entirely
11、As no pumas hadbeen reported missing from any zoo in the country， thisone must have been in the possession of a private collector and somehow managedto escape.
sth be in the possession of sb = sth be insb's possession 某物归某人所有(主语是物)
-- The beautiful car is in my possession.=The beautiful car is in the possession of me. Sb be in possession of sth 某人拥有某物(主语是人)
-- I am in possession of the beautifulcar.(in possession of… 做表语)
-- The person in possession of the big houseis excited. (in possession of… 做定语) take possession of…拥有…
12、The hunt went onfor several weeks， but the puma was not caught.
Went on = lasted (last vi.继续， 持续)
It is disturbing to think that a dangerouswild animal is still at large in the quiet countryside.
It is disturbing to think that... 一想到…就心理不安
-- It is disturbing to think that I fail myexamination
in the quiet countryside 在宁静的山村