来看今天的长难句： ^"
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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. +[uh);vD`G
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步骤一：找主干 _[-MyU s
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这是一个宾语从句，主干为：They predict that ... 他们预测说...... )rj!/%
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步骤二：拆分句子 JJWP te/
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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。 4To$!=
①They predict ②that a complete understanding of the human genetic code would provide untold benefits for humanity, for example, those abilities to diagnose, cure, and eventually prevent many diseases caused by faulty genes. ( (`{-y\K
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① They predict ... They 是整个句子的主语，predict 是谓语 2D"my]FnF
② that 直至句末是一个由 that ...引导的宾语从句，在该从句中： E`^ D9:3:)
a complete understanding of the human genetic code 是主语 vjm? X
would provide 是谓语 t/O^7)%
untold benefits for humanity 是宾语 2'M5+[8y8
for example 是插入语 AhOBbss]q
those abilities to diagnose ... faulty genes 为前文untold benefits for humanity 的同位语 J0R{|]W8
to diagnose, cure, and eventually prevent many diseases caused by faulty genes 动词不定式短语作定语，修饰 abilities N5 ; z5E
caused by faulty genes 动词的过去分词短语作后置定语，修饰 diseases P8dMfD
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步骤三：查生词 ,{q#U3
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1. genetic [dʒəˈnetɪk] adj. 基因的；遗传学的 LXby(|< j
genetic and environmental factors 遗传和环境因素 [O_5`X9|
genetic abnormalities 基因异常 sRcd{)|Cq
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2. untold [ˌʌnˈtəʊld] adj. 不计其数的；难以估量的 By7l Sbj
An Olympic gold medal can lead to untold riches for an athlete. Rh"O$K~
一枚奥运金牌能给运动员带来无尽的财富。 g]z k` R5
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3. faulty [ˈfɔːlti] adj. 有缺陷的 !0zcS7&P
This machine is guaranteed for a year against faulty workmanship. dgX%NKv1
这种机器如有工艺缺陷可保修一年。 wY\,b*x
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参考译文： }eZ \~2
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。
