2017专四阅读主旨题技巧：确定主题句在段落中的位置

2017专四临近，阅读理解在考试当中占据主要地位，想要在阅读部分获得高分，首先要把握阅读的题型和解题方法。来看看小编为大家整理的2017专四阅读主旨题技巧吧！
英语专四阅读理解文章中，文章或段落的主题大意经常体现在主题句上，这就需要我们在阅读文章的时候能够迅速准确地确定主题句的位置。
一般来说主题句出现在段首，但是在很多情况下主题句会出现在一段文字的其他位置，比如有时主题句会出现在段落的开头，有时会出现在中间，有时会出现在段尾，有时首尾都有。
(1)主题句出现在段首。
有些作者喜欢使用主题句作为一个段落或篇章的开始，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.
很明显作者的主旨在第一句话中就体现了出来，段落的其他部分是对这句话的解释，因此第一句话就是主题句。
 (2)主题句出现在段内。
有些段落的主题句前还有几句引导性的细节描写，这些开头句的主要目的是引起读者的注意，将段落大意和前面的段落联系起来，或者是给出该段主题的背景。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.
读后可知第三句为主题句，因为前两句都是来介绍普通的工作名称和不普通工作名称的对比，以引起读者的注意，而第三句则给出了段落大意。
(3)主题句出现在段尾。
主题句出现在段尾的情况，请看例子。
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)主题句出现在首尾。
出现在段首的主题句给出段落大意，出现在段尾的主题句是对段首的强调，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.