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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. o6MFMA+vi
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步骤一：找主干 vHf)gi}O|
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这是一个宾语从句，主干为：They predict that ... 他们预测说...... ri{*\LV*@
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步骤二：拆分句子 oIE
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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。 J
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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. [Kwj
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① They predict ... They 是整个句子的主语，predict 是谓语 'Tm1Mh0Fso
② that 直至句末是一个由 that ...引导的宾语从句，在该从句中： s$Y>nH~T
a complete understanding of the human genetic code 是主语
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would provide 是谓语 z ?\it(
untold benefits for humanity 是宾语 op}!1y$9P
for example 是插入语 45c?0tj
those abilities to diagnose ... faulty genes 为前文untold benefits for humanity 的同位语 b)I-do+
to diagnose, cure, and eventually prevent many diseases caused by faulty genes 动词不定式短语作定语，修饰 abilities rM7qBt
caused by faulty genes 动词的过去分词短语作后置定语，修饰 diseases ]j3> =Jb;
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步骤三：查生词 ln82pQD2Y~
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1. genetic [dʒəˈnetɪk] adj. 基因的；遗传学的 V.*TOU{{xh
genetic and environmental factors 遗传和环境因素 E@SFK=`
genetic abnormalities 基因异常 % Ln`c.C
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2. untold [ˌʌnˈtəʊld] adj. 不计其数的；难以估量的 tY"eo Pm e
An Olympic gold medal can lead to untold riches for an athlete. %y6Q3 @
一枚奥运金牌能给运动员带来无尽的财富。 tY)L^.* 7
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3. faulty [ˈfɔːlti] adj. 有缺陷的 vXDs/,`r
This machine is guaranteed for a year against faulty workmanship. A"JdG%t>.h
这种机器如有工艺缺陷可保修一年。 _@ao$)q{J
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参考译文： K{ P-+(
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。
