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托福听力讲座中历史类话题不断都是比拟高频的话题类型，而这类话题平常感兴味的同窗比拟少，因而对很多人来说都属于比拟生疏的话题，考生抓关键信息的才能也会由于对话题不熟习而遭到影响。下面小编就来为大家解说托福听力讲座类历史话题的5个关键要素。

托福听力历史类话题关键要素一：主题关键词

托福听力讲座类lecture历史类话题总是会呈现和开展、来源或者历史相关的词汇，比方develpoment, change, origin, historical等等，这些词汇有很明显的提示作用，大家需求留意，比方：

Professor: And what instrument comes to mind when you think of rock ‘n' roll?

Student: The electric Guitar?

Professor: Exactly. I think it's fair to say that the sound of the electric guitar typifies the rock ‘n’ roll genre,which became popular in the 1950s. But really the instrument we know today was the result of a continuing development that started for our practical purposes in the 1920s. But long before that even,people were experimenting with ways to modify traditional acoustic guitars.

大家需求留意到文章开头做了两件事情：一. 提出话题“ Electrical Guitar”; 二. 提出了历史类文章要素, 教授说到电吉他是一个“the result of a continuing development” 而且人们很早之前就开端“ modify acoustic guitar”，自但是然我们就能揣测文章是要讲电吉他是如何开展起来的。

托福听力历史类话题关键要素二：影响

详细来说，影响包括了话题的开展;开展过程中所遭到的影响;其所产生的影响;详细的影响是什么;怎样影响的等等，比方：

The first guitars were wooden. This is the Spanish guitar and the strings were made from animal products. Then came steel strings. And that led to the lap guitar,which is also called the steel guitar because the player slides a steel rod up and down the neck. And those are all acoustic guitars. OK?

But then eventually we have electric guitars. Over the years,many inventors and musicians contributed to the design of these instruments. And each design was intended to alter the sound in some way,at first at least with the electric guitar,to make it louder.

很明显的，教授接下来就开端讲到吉他的开展过程，第一种吉他，wooden aka spanish guitar;接着steel guitar;lap guitar;然后有了electric guitar。而且重点说到“ 很多的创造者和音乐家对这种乐器的设计做出了奉献，而且每次的修正的目的就是为了改动电吉他的声音，也就是要素中提到的对话题的影响。

随后，教授继续细致的依照一定的次第谈到了人们关于电吉他的修正有哪些方面，

托福听力历史类话题关键要素三：时间

时间次第也是关键要素。当然，大家可能会留意到，下面例子提到的详细的时间点貌似只要两个1890s 和1920s。但是总的来讲，历史类的文章，时间次第是一件十分关键的事情，由于在讲到某个事物的开展总是会从前往后说，提示一点的是，时间自身不重要，只需搞明白谁前谁后即可。详细例子如下：

So let's get back to when the steel guitar was first introduced in the United States. It was right after the Spanish-American war in the late 1890s. US sailors who were stationed in Hawaii—then a US territory—were very enamored with the music they heard there. Uh,Hawaiian music was based on the steel guitar I just described. Some sailors learned how to play the steel guitar and brought it home to the States. Before long,Hawaiian steel guitar music was all the rage in the mainland US. It actually had a strong influence on the development of several musical genres,rock ‘n' roll most notably,but also jazz and blues.

Anyway,by the 1920s,with the advent of the public dance movement,people were gathering in large groups to listen to steel guitar music. But they had trouble hearing it,especially in large public settings. As I mentioned,the instrument was played horizontally,on the lap. Since the strings faced upward,the sound was projected toward the ceiling rather than outward toward the audience. Something had to be done,because the music venues and the audience kept getting larger and larger.

托福听力历史类话题关键要素四五：话题的特性&人物

普通这两点都是交融在一同的，例子：

Electrified guitars already existed by the time Les Paul came into the picture around 1940. What Paul did was experiment with ways of removing the distortions and he succeeded. He designed a guitar with a solid body that relied solely on electronics. Paul's solid body eliminated the vibrations,and thus the distortions.

此处教授讲到Les Paul此人关于电吉他的修正，使得电吉他有了一个”solid body” ， 减少了声音失真的情况。大家特别要留意，假如一篇文章呈现了好几个人和一个事物的好几个特性的时分，一定要警惕起来，辨别分明哪个特性，属于哪个人物，这通常都是要出难题的先兆。

以上就是托福听力讲座类lecture中高频话题历史类的5个关键信息要素，希望大家可以有所理解并抓住中心信息。

小编找到的是作者的一些见解，希望可以为考生们寻找到最好得分方式。这些资料大家可以作为参考吸收到自己的经验谈之中，适合自己的方法就是最好的方法，希望对大家有所帮助。最后，辛达代报希望广大考生们在备考过程中提升自己的语言水平，取得更好的成绩。

有需要代报考位的同学们，可以直接联系我们，辛达托福代报竭诚为您服务。(*^__^*) 嘻嘻…