来看今天的长难句： 59E9K)c3
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. opcanl9pSW
'Y?-."eKh
步骤一：找主干 GBJ
L B
I Xc `Ec
这是一个宾语从句，主干为：They predict that ... 他们预测说...... Eb3 ZM#
i
;FKnK
步骤二：拆分句子 ;n&95t1$
!:( + #
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。 u0C: q`;z
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. OSu&vFKz
(Y1*Bs[l
① They predict ... They 是整个句子的主语，predict 是谓语 4I4m4^
② that 直至句末是一个由 that ...引导的宾语从句，在该从句中： Cfi{%,em
a complete understanding of the human genetic code 是主语 _>gz&
would provide 是谓语 ]kj^T?&n.
untold benefits for humanity 是宾语 =z1Lim-
for example 是插入语 PGTEIptX7
those abilities to diagnose ... faulty genes 为前文untold benefits for humanity 的同位语 LuS@Kf8N+
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 7[ ovEE54
caused by faulty genes 动词的过去分词短语作后置定语，修饰 diseases Y\
[|k-6
.UK0bxoa
步骤三：查生词 y0%@^^-Ru
Mh%{cLM
1. genetic [dʒəˈnetɪk] adj. 基因的；遗传学的 j >k
;Z j
genetic and environmental factors 遗传和环境因素 hh;kBv07o
genetic abnormalities 基因异常 v93b8/1
! HTOE@
2. untold [ˌʌnˈtəʊld] adj. 不计其数的；难以估量的 kowS| c#
An Olympic gold medal can lead to untold riches for an athlete. t{})6
一枚奥运金牌能给运动员带来无尽的财富。 ( 5LCy?-6
K^WDA])
3. faulty [ˈfɔːlti] adj. 有缺陷的 *@rA7zPFf
This machine is guaranteed for a year against faulty workmanship. N* g
Ju
这种机器如有工艺缺陷可保修一年。 g->*@%?<w>
( )lgd7|+
参考译文：
)fJ"H
q
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。
