来看今天的长难句： aXi5~,Ks_
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. /8V#6d_
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步骤一：找主干 O{b.-<
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这是一个宾语从句，主干为：They predict that ... 他们预测说...... w!$|IC
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步骤二：拆分句子 c%2C\UB
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为了便于分析，帮助大家理解，把这个句子切分了一下，并标上了序号。 \i
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①They predict ②that a complete understanding of the human genetic code would provide untold benefits for humanity, for example, those abilities to diagnose, cure, and eventually prevent many diseases caused by faulty genes. /_Z--s> j
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① They predict ... They 是整个句子的主语，predict 是谓语 nC Mv&{~
② that 直至句末是一个由 that ...引导的宾语从句，在该从句中： \@yx;}bdI
a complete understanding of the human genetic code 是主语 #$h~QBg
would provide 是谓语 v7rEU S -
untold benefits for humanity 是宾语 ~udi=J |
for example 是插入语 $umh&z/
those abilities to diagnose ... faulty genes 为前文untold benefits for humanity 的同位语 r>fx5 5dw
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 Cx>iSx
caused by faulty genes 动词的过去分词短语作后置定语，修饰 diseases oj.f
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步骤三：查生词 d-%!.,F#W
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1. genetic [dʒəˈnetɪk] adj. 基因的；遗传学的 nic7RN ?F<
genetic and environmental factors 遗传和环境因素 gg ;&a(
genetic abnormalities 基因异常 ImJ2tz6
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2. untold [ˌʌnˈtəʊld] adj. 不计其数的；难以估量的 xE/r:D
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An Olympic gold medal can lead to untold riches for an athlete. Kk?P89=*
一枚奥运金牌能给运动员带来无尽的财富。 vby[# S|
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3. faulty [ˈfɔːlti] adj. 有缺陷的 u< `CkYT
This machine is guaranteed for a year against faulty workmanship. r5ONAa3.
这种机器如有工艺缺陷可保修一年。 jkd'2
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参考译文： n[# ! Q`D
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。
