源自新概念3，語言學(xué)習(xí)用

Puma 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? frome 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 blackburries saw ' a large cat' only five yards away from her. It immediately ran away whe she saw it, and experts confirmed that a puma will not attact 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 to for several weeks, but tht puma was not caught. It is disturbing to think that a dangerous wild animal is still at large in the quiet countryside.

1、事物或動物作主語時，如何寫？謂語動詞如何搭配？

2、多重定語的組合運用。

3、句子之間的邏輯，這一句與上一句是如何銜接？代詞的指代？

4、如何表示猜測或推測？