找准信号词

　　在文章的浏览过程中，对文中信息重要性的判断可以帮助读者快速有效地了解段落的大意。在浏览过程中，读者可以通过寻找信号词来区分重要信息和非重要信息。以下列出的是阅读过程中常见的几类信号词。

　　1.以下词组提示下文所涉及的重要信息：

　　The main / important point / conclusion / reason.

　　The point to note here

　　2.以下词组提示了下文的结构框架：

　　There are three major reasons

　　3.but 和 however表示对比，常常用来提示重要信息，例如：

　　The rising birth rate is not due to increased fertility, but to a sharp decline in the death rate.

　　4.在文中提问可以突出问题后的答案，提示读者答案中有重要信息，例如：

　　Why is a piped water supply so important? Disease due to contaminated water is a common cause of death in childhood.

　　5.有时，为了保证读者完全理解自己的观点，作者会在文中反复提出自己的观点，例如：

　　Death control can be achieved autonomously. In other words, the death rate can be cut without anything else changing.

　　6.文章的结论通常是非常重要的，因此，读者要在文中寻找提示结论的信号词，例如：

　　Thereforethe result

　　In conclusionwe can conclude

　　One of the primary conclusions

　　7.举例是为了帮助读者理解某一个观点，因此，文中的例子不是浏览文章时的重要信息。在阅读过程中，以下词组提示读者下文是举例部分信息。

　　For example/instancelike

　　Such asthese include

　　To illustrateamong these are

　　有时，作者也会用破折号或括号来提示举例信息，例如：

　　The developing countries are dependent on cash crops sugar, coffee, cacao, cotton.

　　Precipitating/violent/unexpected factors are those which reduce the food supply

　　在段落浏览时，读者在看到信号词后，应不断对下文信息作出相应的判断，例如：

　　The main reason for the reduction in the death rate in the developing world has been improved public health measures. For example, in Sri Lanka the death rate was halved over ten years by spraying the mosquitoes which carry malaria.

　　Why is it so easy to cut the death rate in this way and yet so hard to reduce the birth rate? One answer is that public health measures can be very cheap. Anti-malarial spraying is inexpensive. But this is not the important point . For birth control programmes to be successful, a change in attitude is required, whereas death control can be achieved autonomously. In other words, the death rate can be cut without anything else changing.