为了帮助考生们更好地备战托福考试，出国留学网托福栏目为您带来“托福听力常见问题之句子听了后面忘前面”，希望对大家有所帮助!
这一期精选的TPO听力文章是一篇4星级难度的动物学讲座TPO22Lecture3。今天我们来学习如何听懂这篇文章里面的五大长难句。同学们听到长难句的时候，往往碰到一个问题：句子长得听了后面忘前面。一种情况是，听到的是零碎的词，串不起来，没理解，所以记不住。还有种情况，是因为同学们在听的时候没有重点，只是很被动地去接纳所听到的信息，不知道句子的主干是什么，从句是起什么作用，解释还是转折。那这种情况即使听20-30遍还是会听不懂。
接下来一起学习这五大长难句，帮助同学们听清完整句子，快速抓住长难句中的重点。
每句话放三遍。
第一遍，放完整句音频，请同学们理解句子大意，最核心的关键信息;
第二遍，将句子切分为几个短句，每个短句放一遍;
第三遍，放完整句音频，理解句子的完整意思 。
1、So, as a way of repairing some of that damage, /a group of conservation biologists has proposed an ambitious, or some might say, a radical plan, /involving large vertebrates, or ,megafauna.
as 作为
conservation 保护; ambitious有野心的; radical 激进的; vertebrate脊椎动物;megafauna巨型动物
2、One is to help prevent the extinction of some endangered megafauna /by providing new refuges, new habitats for them.
help do sth. 帮助……
provide sth. for sb. 为…提供…
3、We believe it played a pivotal role in the evolution of the pronghorn antelope, /the antelope’s amazing speed, to be exact,/ because natural selection would favor those antelope that could outrun a cheetah.
play a role in(doing)sth. 在某事中起某种作用
to be exact 准确来说
4、A big worry is that these transplanted megafauna might devastate plants and animals /that are native to the western United States.
transplanted 移植的;devastate破坏; native 当地的，本土的
5、Also, animal species that went extinct 11,000 years ago, /uh, some are quite different genetically from their modern-day counterparts, /like elephants don’t have thick coats like their mastodon ancestors do/when they graze the prairies of the America West during the Ice Age.
be different from 不同于
coat 皮毛;counterpart 相对应物;graze 放牧 吃草;prairie 大草原
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