另外, 要特别注意上例中提到的in the first place, then , if 等连接语, 这些连接语能帮助我们把握文章内容的编排方式, 领会文章的要点, 准确全面地理解文章。
　　主题句也会出现在段尾。作者先摆出事实依据, 层层推理论证, 最后自然得出结论, 即段落的主题。

　　例8： Some students prefer a strict teacher who tells them exactly what to do. Others prefer to be left to work on their own. Still others like a democratic discussion type of class. No one teaching method can be devised to satisfy all students at the same time.
　　本段的中心思想在结尾句得到体现,它是此段内容的结论。

　　例9： If you were planning to buy a television set, the following advertisement would certainly attract your attention: "Color TV, only $79. Two-day sale. Hurry." However, when you go to the store ready to buy, you may discover that the advertised sets are sold out. But the salesman is quick to reassure you that he has another model, a more reliable set which is "just right for you." It costs $359. This sales tactic is called "bait and switch." Buyers are baited with a sales offer, and then they are switched to another more costly item. Buying items on sale requires careful consideration of the merchandise（商品）and the reasons for the sale.
　　1. Which sentence best expresses the main idea ?
　　A) The customer must be on his guard when purchasing items on sale.
　　B) Color television sets which sell for $79 are sold out quickly.
　　C) Many stores use the "bait and switch" technique to attract customers.
　　D) Anyone planning to buy a television set should look for a sale.
　　2. The paragraph could be entitled
　　A) Buyer Beware　　　　　　　　B) Closeout Sale
　　C) Crime Pays 　　　　　　　　　D) Buying a TV Set
　　作者从一则电视机的广告入手, 介绍了降价推销的惯用手段, 称为 "bait and switch"（廉售某种不打算出卖的商品, 意在诱人购买昂贵的物品）。最后笔锋一转, 点出作者的真正意图, 即本段的主题句, 告诫人们在购买降价商品时要警惕中圈套。 因此正确答案为1.A；2.A.
　　有些段落的主题句会被安排在段落的中间。

　　　　　　　　　　　　　　　　　　　　　　　
　　　　　<<——　上一页　 　　　　　　　　——＞＞　下一页