来看今天的长难句： i~"lcgoO
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. dv cLZK
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步骤一：找主干 "cwvx8un
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这是一个宾语从句，主干为：They predict that ... 他们预测说...... zeshM8=
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步骤二：拆分句子 ~^/BAc
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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。 ,&iEn}xG7i
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. _"t "orD6
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① They predict ... They 是整个句子的主语，predict 是谓语 *SYu
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② that 直至句末是一个由 that ...引导的宾语从句，在该从句中： 0HI0/Tvu$<
a complete understanding of the human genetic code 是主语 &`}d;r|yn1
would provide 是谓语 _D{{C
untold benefits for humanity 是宾语 62 o nMY
for example 是插入语 W b5n> *
those abilities to diagnose ... faulty genes 为前文untold benefits for humanity 的同位语 =)f.Yf|A*
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 "td
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caused by faulty genes 动词的过去分词短语作后置定语，修饰 diseases K_Kz8qV.?
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步骤三：查生词 G%dzJpC(
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1. genetic [dʒəˈnetɪk] adj. 基因的；遗传学的 L2%n pps
genetic and environmental factors 遗传和环境因素 @ =? #nB&
genetic abnormalities 基因异常 L;U?s2&Y
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2. untold [ˌʌnˈtəʊld] adj. 不计其数的；难以估量的 7Q|v5@;pU
An Olympic gold medal can lead to untold riches for an athlete. dW
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一枚奥运金牌能给运动员带来无尽的财富。 o;v_vCLO
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3. faulty [ˈfɔːlti] adj. 有缺陷的 ?^U1~5ff)
This machine is guaranteed for a year against faulty workmanship. p@3 <{kLm
这种机器如有工艺缺陷可保修一年。 <%"CQT6g %
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参考译文： Sj;:
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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。
