托福听力十三原则之开头原则

直入主题式常见关键点：

时态：一般现在时或者将来时

直入主题式常见关键词：now, want to talk about,

3)背景引入式

OG-test 2-L4

We've been looking at colossal statues—works of exceptionally huge size—and their essentially public role, in commemorating a political or religious figure. How some of these statues date back thousands of years... like the statues of the Pharaohs of ancient Egypt—which you can still visit today... and how others, though surviving only in legend, have fired the imagination of writers and artists right up to our own time, such as the Colossus of Rhodes, that 110-foot statue of the Greek god Helios. Remember, this same word, "colossus”一 which means a giant or larger-than-life-size statue—is what today’s term "colossal” derives from. Now, it was one thing to build such statues, at an equally colossal cost, when the funds were being allocated by ancient kings and pharaohs. But if we're going to think about modern-day colossal statues, we need to reexamine more closely their role as social and political symbols—in order to understand why a society today—a society of free, tax-paying citizens—would agree to allocate so much of its resources to erecting them.

背景引入式的开头方式，是听力讲座，尤其是学术类讲座的一个重要特点。为了引出讲座的主题，教授会在一开始的时候，先将一下相关的背景，循序渐进地带入。

背景引入式常见关键点：

时态：一般现在时或者过去式

4)寒暄离题式

TPO2-Lecture2