托福听力如何推测答案。在托福听力过程中，有些同学由于词汇过于专业或者背景知识不太熟，往往只能听到部分信息，在记笔记时，也只记录了部分内容，在这种信息不充分情况下，如何利用逻辑或者常识来推测出正确答案来，是一个非常重要的技能。那么如何培养这种技能呢?首先，要有意识地进行培养，平时遇到听不懂的地方，不要急于去看文本，而是根据自己已听到的，先试着推测一下可能作者会讲到的点，然后再去对文本;如果推测错误，对比自己的思路和作者的思路有什么出入，长期这样有意识地培养，定能找到托福听力作者的思路和出题规律。下面来举例说明：
TPO24 听力lecture 1:
原文有这么一段：
If you were to go to a swamp during the breeding season, you'd hear a chorus of sounds, deep grunts, hisses, these are sounds that male alligators make. And some of them are powerful enough to make the water vibrate. This sends a strong, go-away message to the other males. So the alligator can focus on sending other sound waves through the water, sound waves that you and I couldn't even hear since they are at such low frequency. But they do reach the female alligator, who then goes to find and mate with the male.
2. According to the professor, what are two functions of the sounds made by male alligators? Click 2 answers
A To frighten predators
B To attract mates
C To locate hatchlings
D To threaten other males
因为这段话有很多生单词比如：breeding，a chorus of，grunts，hisses，vibrate等生词，可能这时学生就有点儿慌，但是大部分同学是能听到了大概讲的是male alligator 发声的问题，既然是发声功能问题，而且限定的是male的发声，那么动物界male的动作无非为了两个目的：1.生存-觅食、求救等。2.繁衍后代。根据听这段话，根本就没提一下关于1.生存这个目的信息，所以只能往繁衍后代这个地方去猜测。而繁衍后代这方面，male动物无非就是吸引异性、赶走情敌这两种主要的功能，通过听到的powerful 和low 这种不同特点的声音，可以推测出声音强大，甚至使水波震动，应该是赶走情敌;而声音low比较温柔的应该是吸引异性，所以答案还是很容易选择BD。很多同学容易选的是A，吓走肉食动物，更像是在觅食过程中的动作，而整段话只说明了一层意思，就关于mate的事儿。当然，如果有同学能听出：“This sends a strong, go-away message to the other males.”和“But they do reach the female alligator, who then goes to find and mate with the male.”这两句话，答案就是显而易见的。如果实在没听出来，不妨用逻辑来推出答案来。
再举个例子，同样是TPO24 听力lecture 1:
I mean, crocodiles' brains are the most developed of any reptile. In that sense, they are closer to mammals' brains than other reptiles' brains. And we know that mammals, dogs for example, dogs vocalize many different sounds. Crocodiles have a similar level of, uh, vocal sophistication, if you will, which makes them unique among reptiles.
5. Why does the professor mention dogs?
A To explain that mammals are more complex than reptiles
B To point out that crocodiles can communicate with dogs
C To give an example of mammals that care for their young
D To emphasize that crocodiles have highly developed brains
如果同学在开始的时候就听到了“crocodiles' brains are the most developed of any reptile. In that sense, they are closer to mammals' brains than other reptiles' brains”这两句话中标黑的核心词的话，根据举例原则，应该猜到举个这一哺乳动物的原因就是说明例子前的那句话，那么答案就很清楚是D。即便没听到前面的两句话，可听到再讲狗的大脑，这时候我们就要推测为什么要提到狗呢，明显狗是哺乳动物，而鳄鱼是爬行动物，哺乳动物比爬行动物要高级，能拿鳄鱼和狗相比，肯定是想说鳄鱼和狗具有相同的大脑功能，显然是比较高级的。答案就是D。
通过上面两个例子可以看出，托福考试中做听力题时，推测是多么重要，前程百利希望同学们在学习的过程中，可以多多培养自己推测的能力，那么即使一旦遇到没听懂句子的情况，仍然可以不慌不忙地做题，并通过逻辑推测出正确答案来。
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