继前两期介绍了一部分托福听力信号词之后，本期新航道重庆学校Sukey（景蔚超）老师继续带大家在真题中探索其他的“救命稻草”，以此帮助考生们更准确地预判考点，并记下关键信息。

　　1. 原因类信号词

　　原因类信号词一般用于教授解释观点或现象的原因，有时会与结果信号词连用，也是托福听力细节题高频出题点。

　　比如：

　　l because (of);

　　l the reason (why);

　　l since;

　　l as/for;

　　例题：(TPO16 Conversation 2 Q3)

　　What will the student do this weekend?

　　A. Take a trip with his medieval history class

　　B. Practice speaking French

　　C. Attend an awards ceremony

　　D. Write a paper about Montreal

　　这道题询问学生周末干什么，即询问学生不能参加考试的原因，可通过原因类信号词the reason及结果类信号词so，锁定答案句“Well, the reason, the main reason I wanted to go, is that we’ll be rooming with French-speaking students there. You know, so we can get a chance to use our French to actually talk with real French speakers. ” 故正确答案为B。

　　2. 结果类信号词

　　结果类信号词一般用于总结或说明结果，也是托福听力细节题的出题点。

　　比如：

　　l so;

　　l so that;

　　l therefore;

　　l as a result;

　　l lead to;

　　l result in;

　　例题：(TPO14 Conversation 1 Q2)

　　Why is the student having a problem getting the book she wants?

　　A. Other students are using the book in the library.

　　B. The book is kept in the political science library.

　　C. The student has the incorrect title for the book.

　　D. All the copies of the book have been checked out of the library

　　这道题询问找不到书的原因，可通过结果类信号词so锁定答案句“Well, it’s still here in the library. So people must be using it. ” 故正确答案为A。

　　3. 比较类信号词

　　比较类信号词一般多用于教授对比或类比两个人或事物之间的异同，且经常会在此出现细节考点，也是考生们的易错点。

　　比如：

　　(1)类比词

　　l like;

　　l same/similar to/ similarly;

　　l resemble/resemblance;

　　l analogy/analogous;

　　(2)对比词

　　l unlike;

　　l (not) as…as…;

　　l differ/different;

　　l compare to;

　　l distinction;

　　l instead;

　　l on the other hand;

　　l 比较级;

　　例题：(TPO5 Lecture2 Q2)

　　What does the professor imply about the spacecraft Clementine?

　　A. It sent back the first color photographs of the Moon.

　　B. It was powered by solar energy.

　　C. It landed on the far side of the Moon.

　　D. It flew over the Moon’s polar regions.

　　这道题是与spacecraft Clementine有关的推断题，可通过比较类信号词unlike锁定答案句“…this image is from the mid-nineties, from an American spacecraft called Clementine. Um, unlike earlier lunar missions, Clementine didn't orbit only around the Moon's equator. Its orbits enabled it to send back data to create this topographical map of…Well, the gray-and-white area toward the bottom is the South Pole.” Clementine不止绕着月球的赤道飞，还能传回South Pole的数据，故推理出正确答案为D。

　　以上就是本期托福听力关键信号词的讲解，大家都GET了吗?快快练习起来吧!