托福聽力關鍵類的信號詞

　　這一類信號詞是屬于最為簡單的信號詞，比如“Okay”, “Well”, “Now”, “But”, and “So”這些，具體來說：

　　1. Okay和Now一般用在不同話題或是關鍵信息之間的過度，比如：

　　But all the other elements, like the location or characters, might be modified for each audience. Okay. So what about fairy tales?

　　Take the Grand Canyon for instance. Now, we geologists thought we had a pretty good idea of how the Grand Canyon in the southwestern United States was formed.

　　2. Well一般用在回答一個問題之前，所以聽到這個詞后面往往就是解釋，比如：

　　Um… and it was basically because of Uranium-Lead Dating. Why? Well, as everyone in this class should know, we usually look at the grain type within sandstone, meaning the actual particles in the sandstone, to determine where it came from. “But” and "So" are usually followed by a key point.

　　3. But和So后面一般會緊跟一個關鍵信息點。

　　詞組短句

　　Let’s move on to ...

　　This brings me to my next point, which is….

　　So far we have have been looking at…. Now I’d like to….

　　So now that we've covered…

　　What … is all about is this…

　　上面這些詞組或是短句句式也是比較常見的關鍵信息信號詞，一般都具有很明顯的承上啟下過渡作用，同時也會把前后的關鍵信息key point或者話題topic很明顯的提示給大家，也是考生比較容易抓住的一類信號詞，下面給大家舉幾個例子：

　　All right folks, let’s continue our discussion of alternative energy sources and move on to what’s probably the most well-known alternative energy source--- solar energy.

　　What Aristotle’s ethical theory is all about is this: he’s trying to show you how to be happy—what true happiness is.

　　All right, so far we have been looking at some of the core areas of linguistics, like syntax, phonology, semantics. Now I’d like to talk about the branch of historical linguistics, and the comparison of several different languages, or the comparison of different stages of a single language.

　　重要觀點理論提示

　　接下來的這類信號詞是相當關鍵的，一般在聽力素材中出現(xiàn)這類句式，就代表著接下來說話者要講的會是比較重要的觀點和理論，而類觀點理論都是有很高幾率成為出題點的，大家一定不能錯過：

　　(觀點opinion) I think, It appears that, It is thought that

　　(理論theory) In theory, the hypothesis is that

　　再來看幾個實例：

　　Now, in theory, that would seem a great time to advertise, but maybe a research shows you’re wrong, that the customers who buy sports equipment tend not to give it as a holiday gift, but want to use it themselves.

　　Well, the current hypothesis is that these microorganisms produce a chemical that interacts with the oxygen in the air, creating conditions that lead to the formation of the low thick clouds we observed.

　　其它類型信號詞

　　最后還有一些零散的信號詞也需要大家記住，這類信號詞用來表示對話內(nèi)容之間邏輯關系的情況比較多，考生在聽到后要能夠區(qū)分出信號詞涉及內(nèi)容的邏輯關系，進行簡單記錄為之后的解題提供線索和參考，這些詞有：

　　原因類：reasons (because, since)

　　結(jié)果類：results (as a result, so, therefore, thus, consequently)

　　舉例類：examples (for example, such as)

　　比較類：comparisons (in contrast, than)

　　對比類：an opposing idea (on the other hand, however)

　　引申類：another idea (furthermore, moreover, besides)

　　并列類：a similar idea (similarly, likewise)

　　解釋類：restatements of information (in other words, that is)

　　結(jié)論類：conclusions (in conclusion, in summary)