答好雅思口语Part3, 关键要有很强的论证性，因为Part3题目的特点就在于泛围大而广，并且具有一定的深度。比如说Part3有这样一题：How to keep the balance between developing the tourism industry and protecting the environment? 可见，要想在Part3有较好的表现，掌握一定的论证原则是必要的。

原则1 使用连接词，保证逻辑性　　区分英语说写好坏的标准之一就是连接词的使用，一个英语学习者会不会使用连接词，将直接决定其英语的地道程度和逻辑性，写作中如此，口语中更是这样。不少学生不习惯使用逻辑词，是因为在汉语中，有时并不需要使用太多的逻辑词。例如，汉语中我们常说“你去，我就去。”但英语中一般不说“You go, I go.”而是要加入适当的假设连接词，说成“If you go, then I will go.”，显然更符合英语的表达习惯。可见，要想提高雅思口语Part3的论证性，就要从转变汉语中不常使用连接词这一语言习惯做起。专家总结认为，英语中的连接词可分为两大类：句子内部连接词和句群之间连接词。

(1)句子内部连接词

1)类比和对比：although, though, even though, while, whereas

2)原因和结果：since, so that, because, as

3)时间：after, when, until, whenever, before

4)可能性：if, as if, whether, unless

5)地点：wherever, where

6)方式：how

(2)句群之间连接词

1)逻辑顺序：firstly, secondly, thirdly, next, last, finally, in addition, furthermore, also, at present

2)重要性先后：most/more importantly, most significantly, above all, primarily, it is essential

3)类比和对比：similarly, likewise, also, however, on the other hand, on the contrary, in comparison, in contrast

4)原因和结果：the cause of, the reason for, as a result, as a consequence, therefore, thus, consequently, hence

5)强调：undoubtedly, indeed, obviously, generally, admittedly, in fact, in particular, especially, clearly, importantly

6)递进：and, in addition, additionally, furthermore, also, too, as well as

7)举例：for example, for instance, that is, such as, including, namely

原则2 发音到位，保证清晰性　　发音，不仅是雅思口语的重要评分标准之一，更是保证英语口语清晰性的关键因素。这里要注意的是，发音和口音不同，口音问题主要是由于本国母语或地方方言的影响而造成的语言习惯，并不影响雅思成绩和正常的口语交流。但发建议考生们需要掌握英语中的六大发音原则：

(1)长元音尽量拉长 短元音急促有力

发长元音时，长度要比短元音长一拍，比如以下例句中的fool, please, feel, free, call。短元音则需急促有力，如例句中的is, full, busy。

1)I think Tom is a fool.