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 tokeep the balance between developing the tourism industry and protecting theenvironment? 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。
雅思口语论证原则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“Yougo, I go.”而是要加入适当的假设连接词，说成“If you go, then I willgo.”，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, itis essential
3)类比和对比：similarly, likewise, also, however, on the other hand, on thecontrary, 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, inparticular, 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
雅思口语论证原则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.
2)My full name is Li Ming.
3)Please feel free to call me, I am not busy.
(2)双元音饱满到位
发好双元音，口形非常重要。尽量用你的口形来夸张发音，争取在较短的时间内用饱满、到位的口形把双元音读完，如以下例句中的hate, late,there, smoke, without, fire, take, break。
1)I hate being late for work!
2)There is no smoke without fire.
3)Let’s take a break.
(3)咬舌头
分析发现，有不少学生发[θ]和[e]时，没有注意到这个原则，养成了不好的发音习惯，希望在平时的训练中多加练习，特别是以下例句中的thirty,three, thousand, this, than, that, thank等词。
1)Thirty-three thousand three hundred and thirty-three.
2)This is better than that.
3)Thanks a lot.
(4)卷舌头
与发[r]音不同，发[l]音时舌头应轻触上齿和齿龈的交界处。以下例句中的right, wrong, crazy,spirit包含了[r]音;tell, likely, Lucy, will, library, learn, English包含了[l]音。
1)I can tell right from wrong.
2)It’s not likely that Lucy will be at the library.
3)He has a crazy spirit in learning English.
(5)咬嘴唇
发[f]音时，上齿应轻触下唇，气流从口中自然流出，如以下例句中的life,have等词;发[v]音时，上齿同样轻触下唇，但稍微紧一些，使气流受到阻碍，产生浊化的效果，如以下例句中的give, advice, very, arrive,five等词。
1)Can you give me some advice?
2)He lives a very good life.
3)You have to arrive before five.
(6)闭嘴巴
发[m]音时，双唇紧闭，气流从鼻腔中自然流出。在练习中，要特别注意以下例句中employee, time, swim, system,complicated的[m]音。
1)My employees make me happy most of the time.
2)Melinda might be able to swim one more mile.
3)The system is more complicated than I thought.
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