下面就让小编来为大家介绍一下这篇托福听力TPO9学习笔记的相关内容吧，这是小编的一些见解，以便帮助大家更加充分的理解TPO真题，希望能够给正在准备托福听力的考友们带来帮助。
一、难词注解
Orangutan 猩猩
Gorilla 大猩猩
Pragmatic 实际的;实用主义
high-pitched 高调的;声音尖锐的
discreteness 组件;不连续的
Prairie n. 大草原;牧场
Terminology 术语;措辞
二、长难句分析
Those smaller parts can be used to form an infinite number of messages, including messages that are completely novel, that have never been expressed before. 单位小的信息能够用来组成无限数量的信号，包括那些全新的信号抑或那些以前表达过的。
难词释义：
Infinite n. 无限;[数] 无穷大;无限的东西(如空间，时间)adj. 无限的，无穷的;无数的;极大的
难句类型：
That引导的定语从句，分词短语做伴随状语
难句拆分：
messages that +从句，that+从句
三、考题对应考点
12.T: Oh, sorry, communication, right. But could you maybe, like, clarify what the difference is?学生在开头提出让教授解释一下如何区分 language与animal communication systems，教授之后就这一问题展开，所以选择C
13.I think the researchers claimed that the warning cries of prairie dogs constitute language, because they have this, different parts of speech. You know, like nouns, to name the type of predator they spotted, adjectives to describe its size and shape, verbs..., but now it seems like...强调原则，I think后面的内容要注意，学生以前在课上学过这些，和教授刚刚提及的有冲突。学生认为 dog 是有语言的。选择 C选项。
14.But actually, these warning calls are no different from those found among certain types of monkeys. 转折原则，But 后面的内容要注意，教授否定了 researchers 的 finding.教授认为 researchers 的 finding 不对，不能支持他们的观点，所以选择 B.
15.But the discrete units that make up language can be put together in different ways. Those smaller parts can be used to form an infinite number of messages, including messages that are completely novel, that have never been expressed before.转折原则，but后面的内容是考点，选择A
16.But the discrete units that make up language can be put together in different ways. For example, we can differentiate between: "A large coyote moves fast." and say "Move the large coyo fast." or "Move fast, large coyote.", 这个短语一方面是解释 discrete 的。Human language is productive and open-ended communication system, whereas no other communication system has this property. 提到了productive。所以选择C/D
17.T: Excuse me, Professor. But when you talk about gorilla language, do you mean like, those experiments where humans taught them sign language or a language like...
L: OK, wait just a minute. Now, who in this class heard me use the word "language"?之前学生问了个问题，提了好几个 language，后面教授打断他问：谁刚听到我用了 language这个词呢?很明显，是觉得这个学生用错了 language 这个词。所以选择B.
听力文本结构框架：
这篇文章讲的是哺乳动物身上发现的某些交流体系，首先说到语言与交流的区别，接着说到交流的语法，动物们都有自己的交流语法。
以上就是小编的托福听力TPO9学习笔记中关于lecture4的内容，大家在平时备考时也要注意经验和技巧的积累，更多的笔记内容小编稍后为您呈现。最后，小编预祝大家在托福考试中取得好成绩。
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