怎么解答托福聽力主旨題

在托福聽力中，不管是對話還是演講，第一題都是主旨題，這篇文章主要討論，怎么解答主旨題。

一、主旨題分類

主旨題分為內(nèi)容主旨題和目的主旨題，內(nèi)容主旨題主要是問這篇文章主要內(nèi)容，主要話題。

出題方式：

What is the lecture mainly about?

What is the main topic of the lecture?

What does the professor mainly discuss?

目的主旨題主要是問文章的主要意圖，講這篇文章的目的。目的主旨題的出題方式：

What is the purpose of the lecture?

Why does the student visit the professor?

Why does the professor discuss x?

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二、主旨題信號詞

文章在給出主旨前，通常會有一些信號詞，信號詞后面的內(nèi)容就是主旨。來看一下這些信號詞。

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、主旨題答案出處

托福聽力演講順序和問題是按順序的，主旨題的答案一般出現(xiàn)在文章開頭。教授在演講開始時(shí)，都會說今天主要講什么，這就是主旨。有的是教授一開始就會講今天要講的主要內(nèi)容;有的是以復(fù)習(xí)上節(jié)課內(nèi)容開始，引出今天的主旨;有的是教授先講一些其他的東西，再來講主旨。下面舉例來看一下。

1、文章一開始就出現(xiàn)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

這道題教授在一開始就提到了主旨就是一個(gè)用來測定地理特征的年齡，而且測定地址年齡是很重要的。所以本題答案就是B。

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2、先講相關(guān)內(nèi)容，引出這次課主旨

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.

主旨題一半都是第一題，只要考生在聽力開始，抓住這些信號詞，在平時(shí)學(xué)習(xí)時(shí)多加練習(xí)，主旨題就很容易了。

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