托福口语跟读训练 :地球构造(4)
2017 年 12 月 28 日
来源:朗播网
摘要:对于备考托福口语的同学来说,语音语调的处理是非常重要的能力点之一。对于提升语音语调表现,最有效的方法就是跟读。通过跟读,大家可以熟悉英语中常出现的语音现象;积累到地道实用的表达。为此,小编特意整理了一些老托福听力 93 篇中的音频,配上专业的语音知识进行讲解。大家可以按照跟读步骤进行托福口语跟读训练。
## 托福口语跟读语音分析
[audio_src=https://ssl-info.langlib.com/toefl/FiveStep/9315_11-14.mp3]
On the other hand, S waves either disappeared or were reflected back, so he concluded that the depth marked the boundary between a solid mantle and a liquid core. Three years later, another boundary was discovered that between the mantle and the Earth's crust. There's still a lot to be learned about the Earth. For instance, geologists know that the core is hot. Evidence of this is the molten lava that flows out of volcanoes. But we're still not sure what the source of the heat is.
On the <span class="u-j-vowel"></span> other <span class="u-bold">han<span class='u-leftline'>d</span> </span>, <span class="u-bold">S</span> <span class="u-bold">wave<span class='u-highlight-orange'>s</span></span><span class='u-connect'> <i></i></span><span class="u-bold"><span class='u-highlight-orange'>ei</span>ther</span> <span class="u-bold">disappeare<span class='u-highlight-orange'>d</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>o</span>r we<span class='u-highlight-orange'>re</span><span class='u-connect'> <i></i></span><span class="u-bold"><span class='u-highlight-orange'>r</span>eflecte<span class='u-leftline'>d</span> </span><span class="u-bold">ba<span class='u-leftline'>ck</span> </span>, so he <span class="u-bold">conclude<span class='u-leftline'>d</span> </span>tha<span class='u-leftline'>t</span> the <span class="u-bold">depth</span> <span class="u-bold">mark<span class='u-leftline'>ed</span> </span>the <span class="u-bold">boundary</span> betwee<span class='u-highlight-orange'>n</span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>a</span> <span class="u-bold">soli<span class='u-leftline'>d</span> </span><span class="u-bold">mant<span class='u-highlight-orange'>le</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>a</span>n<span class='u-highlight-orange'>d</span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>a</span> <span class="u-bold">liqui<span class='u-leftline'>d</span> </span><span class="u-bold">core</span>.
<span class="u-bold">Three</span> <span class="u-bold">years</span> <span class="u-bold">later</span>, another <span class="u-bold">boundary</span> was <span class="u-bold">discovere<span class='u-leftline'>d</span> </span>tha<span class='u-leftline'>t</span> between the <span class="u-bold">mant<span class='u-highlight-orange'>le</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>a</span>n<span class='u-leftline'>d</span> the <span class="u-j-vowel"></span> <span class="u-bold">Earth's</span> <span class="u-bold">crus<span class='u-leftline'>t</span> </span>.
There'<span class='u-highlight-orange'>s</span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>s</span>ti<span class='u-highlight-orange'>ll</span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>a</span> <span class="u-bold">lo<span class='u-highlight-orange'>t</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>t</span>o be <span class="u-bold">learn<span class='u-highlight-orange'>ed</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>a</span>bou<span class='u-leftline'>t</span> the <span class="u-j-vowel"></span> <span class="u-bold">Earth</span>.
Fo<span class='u-highlight-orange'>r</span><span class='u-connect'> <i></i></span><span class="u-bold"><span class='u-highlight-orange'>i</span>nstance</span>, <span class="u-bold">geologists</span> <span class="u-bold">know</span> tha<span class='u-leftline'>t</span> the <span class="u-bold">co<span class='u-highlight-orange'>re</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>i</span>s <span class="u-bold">ho<span class='u-leftline'>t</span> </span>. <span class="u-bold">Eviden<span class='u-highlight-orange'>ce</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>o</span>f thi<span class='u-highlight-orange'>s</span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>i</span>s the <span class="u-bold">molten</span> <span class="u-bold">lava</span> tha<span class='u-leftline'>t</span> <span class="u-bold">flow<span class='u-highlight-orange'>s</span></span><span class='u-connect'> <i></i></span><span class="u-bold"><span class='u-highlight-orange'>ou</span><span class='u-highlight-orange'>t</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>o</span><span class='u-highlight-orange'>f</span><span class='u-connect'> <i></i></span><span class="u-bold"><span class='u-highlight-orange'>v</span>olcanoes</span>. Bu<span class='u-leftline'>t</span> we're still <span class="u-bold">no<span class='u-leftline'>t</span> </span><span class="u-bold">sure</span> <span class="u-bold">wha<span class='u-leftline'>t</span> </span>the <span class="u-bold">sour<span class='u-highlight-orange'>ce</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>o</span>f the <span class="u-bold">hea<span class='u-highlight-orange'>t</span></span><span class='u-connect'> <i></i></span><span class='u-highlight-orange'>i</span>s.
## 句子翻译
另一方面,S 波要么消失,或者被反射,所以他推断这个深度标示了固态地幔和液态地核的界限。三年后,另一个分界线被发现,是在地幔和地壳之间。关于地球还有许多要学习的。举例来说,地质学家知道地核是热的。这点的证据是火山中流出的熔岩。但我们依然不知道热源是什么。
## 托福口语跟读难点解析
这段音频中出现了多处失爆现象,如第一句中conducted和that、solid和mantle、以及liquid和core连读时都发生了失爆。这些语音现象会加快语速,跟读也变得困难。大家只有先熟悉了其中的规律,才能跟得上原音频的节奏,持续练习,口语水平才能得到提高。
## 托福口语跟读知识点梳理
### 失爆
顾名思义,指爆破音失去爆破。发生的条件如下:当前面的单词以[p][b][t][d][k][g]这六个爆破音中的任何一个结尾,而紧随其后的单词是以辅音开头的,这时前面单词中的爆破音失去爆破。读法是在发爆破音时只阻塞气流却不将之释放,说白了就是只作口型不发音。
发音示范:
**mad John** [word_audio_src=http://langlib-public.langlib.com/Peripheral/Phonetic/2-1-2-1-02.mp3]
**lap dog** [word_audio_src=http://langlib-public.langlib.com/Peripheral/Phonetic/2-1-2-1-01.mp3]
以上就是托福口语语音训练的相关内容。同学们在前期要注意学习每种发音规则及其技巧,在练习的过程中注重质量;后期在熟练的前提下提升语速。长此以往,大家的口语水平一定能够有本质的提高。