接触过PTE的考生心理可能都有一个小疑问，为什么我的口语花了那么长时间去纠音，单词发音对了，单词重读对了，可是我读英语的时候还是语调平平，没有native speaker声音上的那种起伏呢？墨尔本悉尼文波PTE告诉你其实你欠缺了这两点。
第一个影响语调的因素自然是单词重读和轻读处理，很多同学往往是词词都重读，那自然就相当于没有重读。下面我们来看一个具体的例子吧：
Global warming is defined as an increase in the average temperature of the earth’s atmosphere. This trend began in the middle of the 20th century and is one of the major environmental concerns of scientists and governmental officials worldwide. The changes in temperature result mostly from the effect of increased concentrations of greenhouse gasses in the atmosphere.
实词重读和虚词轻读是主要的原则，这其中需要处理的实词包括：名词，形容词，动词，副词，代词。这些单词重读以红色标出：
Global warming is defined as an increase in the average temperature of the earth’s atmosphere. This trend began in the middle of the 20th century and is one of the major environmental concerns of scientists and governmental officials worldwide. The changes in temperature result mostly from the effect of increased concentrations of greenhouse gasses in the atmosphere.
那么剩下的词我们就做轻读处理了，需要做轻读处理的单词包括：冠词，介词，连词。这些单词以绿色标出：
Global warming is defined as an increase in the average temperature of the earth’s atmosphere. This trend began in the middle of the 20th century and is one of the major environmental concerns of scientists and governmental officials worldwide. The changes in temperature result mostly from the effect of increased concentrations of greenhouse gasses in the atmosphere.
轻重音有了，但是如何做到这个对比呢？其实差别就是在单词发音长度和音量上。举个例子，“in the ” 轻读就是降低一些音量，另外读得轻快一些。“earth’s atmosphere” 提高一些音量，然后读得略慢一些，这样就可能形成声音的高低对比。
下面各位就用这个轻重音规则练习一下吧，你会发现声音的高低对比和韵律感会明显加强的。
