上一講我們講到可以利用句子在段落中的位置來判斷段落的主題句。其實除此之外，段落中的關鍵詞也是確定主題句的重要線索。這一講中，我們會重點分析這個問題，希望同學們以后能夠培養起對這些詞匯的敏感的感覺，學會有效率地閱讀。

　　 標志詞：文章中有些詞匯對于我們正確判斷一段話的主題是至關重要的。在雅思考試的文章中，主要有三類：強轉折性的詞、表示重要性結構的詞和表示人物觀點結論性的詞。

　　A. 強轉折性的詞

　　強轉折的詞主要包括but, however, yet, in fact等。這種詞一方面表示其前后連接的內容是相反的關系。另一方面，強轉折的詞強調的是后面的內容，所以but之類的詞后面的內容應該是我們閱讀的重點。特別是如果這種詞出現在一段話的中前部，那么此句多半是整段話的論點，也就是整段的主題句。

　　需要注意的是，像although, though, despite, in spite of, albeit, while這種詞不同于強轉折的詞，

　　Congress can pass laws, regulators can beef up enforcement, and shareholders can demand more accountability. But when it comes right down to it, making sure a company is operating well is really an inside job. Thats where internal auditing comes in. It doesnt sound glamorous, but its an expanding field beckoning to people with a lot of pent up we-can-do-better energy. Internal auditors keep an eye on a companys controls-not just financial systems, but all sorts of functions designed to make the business run smoothly and protect the interests of shareholders.

　　All good fun. But in the aftermath of the Columbia disaster, the value of commercial research on missions has come into question. STS-107-the final flight of the Columbia-had 80 experiments on board, including five that were conducted by the astronauts for private companies, funded almost entirely by NASA. One was for International Flavors Fragrances , which extracted the smell of a rose in space and was back seeking new scents. The other commercial experiments involved studies of ways to fight fire using fine Water mist, grow proteins with greater resilience to disease, manufacture crystals for such uses as hydrogen fuel storage and advance cancer-cell research. Is all this worth pursuing in space?

　　B. 表重要性的結構

　　Are Americans a nation of frivolous divorcers who selfishly pursue the bluebird of happiness, oblivious to their childrens needs? Divorce opponents like Judith Wallerstein seem to think most parents see divorce as a marvelous opportunity for the whole family. How immature do they think people are ?All over America, unhappy spouses lie awake at night wondering if they and their kids can afford divorce financially, socially, emotionally. Where will they live, how will they pay the bills, will the kids fall apart, will there be a custody battle, what will their families say? The very fact that so many people leave their marriage for a future with so many pitfalls proves that divorce is anything but a whim. Most people I know who split up spent years working up to it.

　　上一講我們講到可以利用句子在段落中的位置來判斷段落的主題句。其實除此之外，段落中的關鍵詞也是確定主題句的重要線索。這一講中，我們會重點分析這個問題，希望同學們以后能夠培養起對這些詞匯的敏感的感覺，學會有效率地閱讀。

　　 標志詞：文章中有些詞匯對于我們正確判斷一段話的主題是至關重要的。在雅思考試的文章中，主要有三類：強轉折性的詞、表示重要性結構的詞和表示人物觀點結論性的詞。

　　A. 強轉折性的詞

　　強轉折的詞主要包括but, however, yet, in fact等。這種詞一方面表示其前后連接的內容是相反的關系。另一方面，強轉折的詞強調的是后面的內容，所以but之類的詞后面的內容應該是我們閱讀的重點。特別是如果這種詞出現在一段話的中前部，那么此句多半是整段話的論點，也就是整段的主題句。

　　需要注意的是，像although, though, despite, in spite of, albeit, while這種詞不同于強轉折的詞，

　　Congress can pass laws, regulators can beef up enforcement, and shareholders can demand more accountability. But when it comes right down to it, making sure a company is operating well is really an inside job. Thats where internal auditing comes in. It doesnt sound glamorous, but its an expanding field beckoning to people with a lot of pent up we-can-do-better energy. Internal auditors keep an eye on a companys controls-not just financial systems, but all sorts of functions designed to make the business run smoothly and protect the interests of shareholders.

　　All good fun. But in the aftermath of the Columbia disaster, the value of commercial research on missions has come into question. STS-107-the final flight of the Columbia-had 80 experiments on board, including five that were conducted by the astronauts for private companies, funded almost entirely by NASA. One was for International Flavors Fragrances , which extracted the smell of a rose in space and was back seeking new scents. The other commercial experiments involved studies of ways to fight fire using fine Water mist, grow proteins with greater resilience to disease, manufacture crystals for such uses as hydrogen fuel storage and advance cancer-cell research. Is all this worth pursuing in space?

　　B. 表重要性的結構

　　Are Americans a nation of frivolous divorcers who selfishly pursue the bluebird of happiness, oblivious to their childrens needs? Divorce opponents like Judith Wallerstein seem to think most parents see divorce as a marvelous opportunity for the whole family. How immature do they think people are ?All over America, unhappy spouses lie awake at night wondering if they and their kids can afford divorce financially, socially, emotionally. Where will they live, how will they pay the bills, will the kids fall apart, will there be a custody battle, what will their families say? The very fact that so many people leave their marriage for a future with so many pitfalls proves that divorce is anything but a whim. Most people I know who split up spent years working up to it.