A puma will not attack a human being unless it feels itself to be______.A in a corner B in a trap 为什么选B?

puma will not attack a human being unless it is conered 其中being在这里是什么意思,为什么用being A puma will not attack a human being unless it feels itself to be______.A in a corner B in a trap 为什么选B? 英语翻译It immediately ran away when she saw it,and experts confirmed that a puma will not attack a human being unless it is cornered 新概念3时态 experts confirmed that a puma will not attack a human being.原句:It immediately ran away when she see it,and experts confirmed that a puma will not attack a human being unless it is cornered.这里confirmed (过去时) 为何它的 （新概念英语)A puma will not attack a human being unless it feels itself to be ( ).A:in a corner B:in a trap C:at an angle D:under cover 这道题也是根据原文的意思来选择最符合原文意思的答案,有关的原文是：a puma wil A puma will not attack a human being unless it it feels itself to be ___.为什么是in a trap而不是in a corner,in a corner也有处于困境的意思啊 A puma will not attack a human being unless it feels itself to be ___.A.in a corner B.at an angle C.in a trap D.in the ring puma puma 新概念第三册英第一课问题..and experts confirmed that a puma will not attack a human being unless it is cornered.这里的being看不懂为什么用在这里?起什么作用? 关于UnlessUnless表示if not.在新概念三第一课里有一句...,and experts confirmed that a puma will not attack a human being unless it is cornered.原句不是有个not了吗?把原句改成if not的形式怎么改呢?有这个疑问是因 a puma at large句句语法分析 英语的虚拟语态新概念第三册第一课就有一个句型:a puma will not attack a human being unless it is cornered.请问这里有虚拟语态吗?美洲狮不会袭击人类除非它被避到绝境．”除非”不就是说虚拟的吗? 新概念3第一课.有句话不懂……and experts confirmed that a puma will not attack a human being unless it is cornered.这句话里的being有什么用?human 不就是人类的意思么？being 也是人类我晕。我希望回答的人能抱 The importent thing in life is to have a aim.and the determination to atta 英语翻译On the island,the bugs save Dot,Atta's young sister,from a big bird. a puma at large 中文翻译为什么是逃遁的美洲狮 a puma at large求新概念英语3第一课“A puma at large” 的MP3格式的