如果说问到你在SAT写作中哪一个证据是最明显的最突出的最典型的，同学们一定会毫不犹豫地推选出examples，因为比起其他分类来说，examples几乎带着一个子招摇过市。

　　有标志词的例子

　　例子的标志词：for example/take…as an example/like…/such as…

　　The rest of the world depends on darkness as well, including nocturnal and crepuscular species of birds, insects, mammals, fish and reptiles. Some examples are well known—the 400 species of birds that migrate at night in North America, the sea turtles that come ashore to lay their eggs—and some are not, such as the bats that save American farmers billions in pest control and the moths that pollinate 80% of the world’s flora. Ecological light pollution is like the bulldozer of the night, wrecking habitat and disrupting ecosystems several billion years in the making. Simply put, without darkness, Earth’s ecology would collapse . . . .

　　没有标志词也可能是例子

　　当然同学们也需要注意的是，不是所有例子都有明显的标志词，有的时候文章作者也会将自己的个人经历表述出来，作为例子出现在文本中，所以同学们不要被标志词迷惑了双眼，而是需要看看例子的真正内容。

　　At my family’s cabin on a Minnesota lake, I knew woods so dark that my hands disappeared before my eyes. I knew night skies in which meteors left smoky trails across sugary spreads of stars. But now, when8 of 10 children born in the United States will never know a sky dark enough for the Milky Way, I worry we are rapidly losing night’s natural darkness before realizing its worth. This winter solstice, as we cheer the days’ gradual movement back toward light, let us also remember the irreplaceable value of darkness.更多sat考试干货敬请关注新航道sat考试频道