例句1 Many zoos also work directly to educate conservation workers in other countries, or send their animal keepers abroad to contribute their knowledge and skills to those working in zoos and reserves, thereby helping to improve conditions and reintroductions all over the world. （剑 14 Test 4 Passage 2）
1）结构分析 层次一： 主句：Many zoos also work or send their animal keepers abroad 修饰①：to ...countries【to do不定式，修饰work，表目的】 修饰②：to.... reserves【to do不定式，修饰send，表目的】 修饰③：thereby helping.....world【doing分词状语，表结果】
例句2 While it is true that television documentaries are becoming ever more detailed and impressive, and many natural history specimens are on display in museums, there really is nothing to compare with seeing a living creature in the flesh, hearing it, smelling it, watching what it does and having the time to absorb details. （剑 14 Test 4 Passage 2）
1）结构分析 层次一： 主句：there really is nothing to compare 修饰①：with....detailes【that同位从，修饰idea】 修饰②：while......museums【while状从，修饰主句，表让步】
3）重点词汇： . television documentaries：（词组）电视纪录片 . detailed：adj. 详细的 . impressive：adj. 令人印象深刻的 . history specimens：（词组）历史标本 . on display：（词组）陈列 . living creature：（词组）生物 . absorb：v. 吸收
例句3 They are vital not just in terms of protecting animals, but as a means of learning about them to aid those still in the wild, as well as educating and informing the general population about these animals and their world so that they can assist or at least accept the need to be more environmentally conscious. （剑 14 Test 4 Passage 2）
1）结构分析： 层次一： 主句：They are vital 修饰①：not just in terms of......【介短，修饰vital，表方面】 修饰②：but as means of.........conscious【介短，修饰vital，表方面】
层次二： 修饰②内部： 主体：leaning about them，as well as educating and informing...world 修饰①：to aid those still in the wild【to do状语，修饰learning，表目的】 修饰②：so that.......conscious【so that状从，修饰educating informing，表目的】
