来看今天的长难句： L5:1dF
They predict that a complete understanding of the human genetic code would provide untold benefits for humanity，for example，those abilities to diagnose, cure, and eventually prevent many diseases caused by faulty genes. "8) %XSb
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步骤一：找主干 g9Dyn m5
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这是一个宾语从句，主干为：They predict that ... 他们预测说...... ,y0 &E8Z
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步骤二：拆分句子 D1ik*mDA=
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为了便于分析，帮助大家理解，把这个句子切分了一下，并标上了序号。 %IIFLlD
①They predict ②that a complete understanding of the human genetic code would provide untold benefits for humanity, for example, those abilities to diagnose, cure, and eventually prevent many diseases caused by faulty genes. ijcF[bm E
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① They predict ... They 是整个句子的主语，predict 是谓语 T#e|{ZCbq
② that 直至句末是一个由 that ...引导的宾语从句，在该从句中： i u 0'[
a complete understanding of the human genetic code 是主语 Bs '=YK$
would provide 是谓语 [@pumH>
untold benefits for humanity 是宾语 1TzwXX7
for example 是插入语 =Y^K
those abilities to diagnose ... faulty genes 为前文untold benefits for humanity 的同位语
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to diagnose, cure, and eventually prevent many diseases caused by faulty genes 动词不定式短语作定语，修饰 abilities ES(qu] CjI
caused by faulty genes 动词的过去分词短语作后置定语，修饰 diseases c<Ud[x.
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步骤三：查生词 ([SJ6ff]&
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1. genetic [dʒəˈnetɪk] adj. 基因的；遗传学的 GAs.?JHd
genetic and environmental factors 遗传和环境因素 ?{L'd
genetic abnormalities 基因异常 A*|\E:fo
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2. untold [ˌʌnˈtəʊld] adj. 不计其数的；难以估量的 _K!)0p
An Olympic gold medal can lead to untold riches for an athlete. -) +B!"1
一枚奥运金牌能给运动员带来无尽的财富。 t3v_
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3. faulty [ˈfɔːlti] adj. 有缺陷的 ]X X> h~0
This machine is guaranteed for a year against faulty workmanship. [_KOU2
这种机器如有工艺缺陷可保修一年。 ^%\MOjSN
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参考译文： yYTO
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他们预计，对人体基因编码的全面认识将给人类带来无法估量的好处，例如，使人类能够诊断、治疗并最终预防由基因缺陷造成的很多疾病。
