托福听力有许多种题型，事实上每一种题型都有它的出题规律与解题方法，那么不论是对话还是演讲，首题都是主旨题，这篇文章主要讨论如何去解主旨题。下面为大家带来了托福听力的主旨题怎么解答。

　　以下详细介绍了托福听力的主旨题怎么解答：

　　一、主旨题分类

　　主旨题可划分成内容主旨题和目的主旨题，内容主旨题主要都是提出这篇文章主要内容，主要话题。

　　出题方式：

　　What is the lecture mainly about?

　　What is the main topic of the lecture?

　　What does the professor mainly discuss?

　　目的主旨题主要是提出文章的主要意图，讲这篇文章的目的。目的主旨题的出题方式：

　　What is the purpose of the lecture?

　　Why does the student visit the professor?

　　Why does the professor discuss x?

　　二、主旨题信号词

　　文章在给出主旨前，一般会有一些信号词，信号词后面的内容便是主旨。来看一下这些信号词。

　　And to get started I thought I’d mention something…

　　Today, I want to talk about…

　　Let’s continue our discussion about…

　　Before we close today, we need to discuss …

　　三、主旨题答案出处

　　托福听力演讲顺序和问题都是根据顺序的，主旨题的答案通常会在文章开头出现。教授在演讲开始时，都会表示今天主要讲什么，这便是主旨。有一些教授一开始便会讲今天要讲的主要内容;有的是以复习上节课内容开始，引出今天的主旨;有的是教授先讲一些其他的东西，再来讲主旨。下面举例来看一下。

　　1.文章一开始就出现主旨

Ok, let’s get started. Great. Today I want to talk about a way in which we are able to determine how old a piece of land, or some other geologic feature is - dating techniques. I’m going to talk about a particular dating technique. Why? Good dating is key to good analysis. In other words, if you want to know how a land formation was formed, the first thing you probably want to know is how old it is. It’s fundamental.

　　What does the professor mainly discuss?

　　A The differences in age among American mountain range

　　B The importance of a technique used for dating geological materials

　　C The recent discovery of an ancient canyon

　　D A comparison of minerals used for dating

　　上面的题教授在开始时便提到了主旨就是一个用来测定地理特征的年龄，而且测定地址年龄是很重要的。所以本题答案就是B。

　　2.先讲相关内容，引出这次课主旨

　　As geologists , we examine layers of sediment on the Earth' s surface to

　　APproximate the dates of past geologic time periods. Ah sediment as you

　　know is material like sand , gravel, fossil fragments that is transported by

　　natural processes like wind , water flow or the movement of glaciers.

　　So sediment is transported and then deposited and it forms layers on the

　　Earth’ s surface over time. We examine these layers to learn about

　　different geologic time periods including when they began and ended.

　　以上是托福听力的主旨题怎么解答的介绍，主旨题一半都是第一题，只要考生在听力开始，抓住这些信号词，在平时学习时多加练习。