2017專四閱讀主旨題技巧：確定主題句在段落中的位置

2017專四臨近，閱讀理解在考試當中佔據主要地位，想要在閱讀部分獲得高分，首先要把握閱讀的題型和解題方法。來看看小編爲大家整理的2017專四閱讀主旨題技巧吧！

英語專四閱讀理解文章中，文章或段落的主題大意經常體現在主題句上，這就需要我們在閱讀文章的時候能夠迅速準確地確定主題句的位置。

一般來說主題句出現在段首，但是在很多情況下主題句會出現在一段文字的其他位置，比如有時主題句會出現在段落的開頭，有時會出現在中間，有時會出現在段尾，有時首尾都有。

(1)主題句出現在段首。

有些作者喜歡使用主題句作爲一個段落或篇章的開始，例如：

Pain can cause aggression. When two rats in the same cage were given foot shocks, they attacked each other immediately. In addition, stronger shocks resulted in more violent aggression. Pairs of various other animals reacted similarly. A stubbed toe or a headache has been known to cause similar responses in humans.

很明顯作者的主旨在第一句話中就體現了出來，段落的其他部分是對這句話的解釋，因此第一句話就是主題句。

 (2)主題句出現在段內。

有些段落的主題句前還有幾句引導性的細節描寫，這些開頭句的主要目的是引起讀者的注意，將段落大意和前面的段落聯繫起來，或者是給出該段主題的背景。例如：

Everyone has heard of accounts, salespeople, and lawyers. But have you ever heard of a kiss mixer or a belly builder? Most jobs have common titles, but there are also many unusual position titles. A kiss mixer, for instance, is the person who mixes the ingredients for candy kisses. And a belly builder is the individual who assembles and fits the inside parts of pianos.

讀後可知第三句爲主題句，因爲前兩句都是來介紹普通的工作名稱和不普通工作名稱的對比，以引起讀者的注意，而第三句則給出了段落大意。

(3)主題句出現在段尾。

主題句出現在段尾的情況，請看例子。

A couple’s daughter had just graduated from college. So they were not surprised when a florist’s truck pulled in front of their house. However, they were surprised when they saw that the dozen red roses were addressed to them. The card read, “Thanks, Mom and Dad, for making this day possible. I could not have done it without your love and support.” In an unusual switch, the graduate had given her parents a graduation gift.

(4)主題句出現在首尾。

出現在段首的主題句給出段落大意，出現在段尾的主題句是對段首的強調，例如：

Dental research on rats may lead to chocolate that’s good for you. In one study, researchers found that rats who ate chocolate candy high in fat and casein got 71 percent fewer cavities than those who ate sugar or fudge alone. In a follow-up study, rats were fed chocolate candy that had an even greater amount of casein, a milk protein. The rats then got almost no cavities at all. Because of this research, one company may develop a chocolate candy that’s healthy for your teeth.