B.概括和歸納出主題思想。實際上，在閱讀理解測試部分有的文章是沒有主題句的。這是由於文章的'體裁不同或是由於閱讀的短文是從篇幅較長的文章中節選的。這時就要靠讀者自己進行概括或歸納隱含的主題思想了。概括主題可以從歸納每段的要點開始，最後將各段要點集中概括並歸納出全文的主題思想。下面不妨考察幾個例子：
例
A bus driver must answer questions while guiding a bus through heavy traffic. All day long, the driver answers the same questions without becoming angry. Every few minutes a bus driver has to ask passengers to step to the rear of the bus. In spite of traffic snarls and thoughtless passengers who cause delays, a bus driver is expected to cover his or her route on schedule.
這一段的隱含主題句可概括為Driving a bus is hard work.
例
A green I-538 form is used by international students in order to obtain permission from the Immigration and Naturalization Service to transfer from one university to another in the United States. If you are planning to transfer, remember that you must obtain the permission before leaving the university where you are currently studying. You must complete the form I-538, have it signed by the foreign student advisor, and submit it to the District Office of the Immigration and Naturalization Service together with the form I-20 from the new school and the small, white form I-94 that was affixed to your passport when you entered the country.
