通常信号词有：Think of A as B…，A is like/ sort of like B…; A is similar to B…; Imagine B…
例题：Why does the professor mention bears? (TPO 41 Lecture 1 Q3)
A.To remind students of information from a previous lecture
B.To point out a feature common to all desert plants
C.To reinforce a point about drought-tolerant plants
D.To help students understand the concept of adaptation
答案 C,定位句: Now besides succulent plants, there are also drought-tolerant plants. Drought-tolerant plants are like bears in a way. You know how bears mostly sleep through the winter? They can survive without eating, because their metabolism slows down. Well, Drought- tolerant plants also go into a dormant state, when resource, in that case, water runs short. 这里Drought-tolerant plants are like bears in a way句子,提示教授开始用bears来类比,帮助学生理解抗干旱植物的休眠过程的。考察提bears的作用。
例题：How does the woman summarize the professor’s main point in the talk? （TPO17 lecture 1 Q5）
A. By drawing a parallel with a process common to the legal field.
B. By repeating a comment the professor made at the beginning of class.
C. By referring to a study that supports the professor’s theory.
D. By comparing the professor’s remarks with statements in the textbook.
S: What you are saying is, I mean, I get the feeling that this is like a legal process, like building a legal case, the more pieces of evidence we have, the closer we get to the truth.
P: Great analogy. And now you can see why we don’t have an exact date for our sculpture, the lady with the hood.