Pumas are large cat-like animals which are found in America.
句子結構:主句Pumas … animals + which 定從。
下定義句
· A is B + 定從；
· A is called B + 定從；
· A is referred to B + 定從；
· A is defined/termed as B + 定從;
E.g. Life is a journey which everyone has his own practice.
When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London, they were not taken seriously.
句子結構：時間狀從句when … London + 主句；
時間狀語從句結構：主句 reports … Zoo + that 同位語從句。
同從 V.S. 定從
· 從句性質：同從：名詞性質，定從：形容詞性質；
· 連接詞：同從：that 不作成分，但不可省略，后接完整句子；定從：that 作成分，作從句賓語時可省略，that 后句子是不完整的。
· 同位語從句引導詞：that, whether, who, which, where, when…, 90%情況引導詞為that，先行詞通常是抽象名詞。
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.
句子結構：時狀從 as … accumulate + 主句 experts … investigate + 原因狀從for。
as作連詞引導的狀語從句：
方式狀從：一般表達正如的意思
原因狀從：一般譯為- 由于/因為
時狀從：一般譯為 - 隨著/當
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.
句子結構：主句 the hunt … village + 定從
定從結構：a woman 主，picking blackberries 定，saw 謂，’a large cat’ 賓，only five yards away from her 地狀。
It immediately ran away when she saw it, and experts confirmed that a puma will not attack a human being unless it is cornered.
句子結構：主句 it … away + 時狀從 when … it；主句 experts confirmed + 賓從 that
時態(tài)
· experts confirmed that … will not attack，主句過去時 + 從句一般將來時；
· 從句內(nèi)容謂客觀事實時，從句狀態(tài)不受主句影響，一般是一般現(xiàn)在時或一般將來時。
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.
句子結構：主句 the search … difficult + 原因狀從 for
trail n. 一串（量詞）, a 量詞 of sth.
a drop of water 一滴水
a sum of money 一筆錢
Wherever it went it left behind it a trail of dead deer and small animals like rabbits.
句子結構：讓步狀從wherever it went + 主句 it …
Where 引導的從句
· 1. 引導地點狀語從句
表示“在……的任何（所有）地方”，與where, anywhere, everywhere 用法相似.
E.g.: You can sit wherever you like. 你喜歡坐哪兒都可以。
· 2. 引導讓步狀語從句，
表示“不管在（到）哪里”，相當于no matter where。
E.g.: Wherever he goes, I’ll go. 不管他去哪里，我也去。
Paw prints were seen in a number of places and puma fur was found clinging to bushes.
句子結構：并列的被動語態(tài)，
Paw prints 主，were seen 謂，in a number of places 主補；
Puma fur 主，was found 謂，clinging to bushes 主補。
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.
句子結構：原因狀從 as … country + 主句
原狀從結構：no pumas 主，had been reported 謂，missing 主補
must/could/might have done/been 對過去事件的推測，語氣由強到弱。
manage to do sth. V.S. try to do sth.
· manage… 設法做sth. 并且做到了，強調結構；
· try … 嘗試做sth. 不一定做到了，強調過程。
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.
句子結構：it 形式主語，is 系，disturbing 表，to think… 真正的主語。
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