以下是引用amy7777在2006-9-20 21:28:00的发言：大全587 1.
Proponents of artificial intelligence say they will be able to make computers that can understand English and other human languages, recognize objects, and reason as an expert does—computers that will be used to diagnose equipment breakdowns, deciding whether to authorize a loan, or other purposes such as these.
(A) as an expert does—computers that will be used to diagnose equipment breakdowns, deciding whether to authorize a loan, or other purposes such as these
(B) as an expert does, which may be used for purposes such as diagnosing equipment breakdowns or deciding whether to authorize a loan
(C) like an expert—computers that will be used for such purposes as diagnosing equipment breakdowns or deciding whether to authorize a loan
(D) like an expert, the use of which would be for purposes like the diagnosis of equipment breakdowns or the decision whether or not a loan should be authorized（C）
(E) like an expert, to be used to diagnose equipment breakdowns, deciding whether to authorize a loan or not, or the like
答案C 请问破折号后面是作什么成份的呢？对于破折的用法不太明白。 另外like an expert指是的reason like an expert 还是 understand English and other human languages, recognize objects, and reason 这三个动作like an expert？？？ “——”起解释说明的作用，相当于定语从句。一般来讲，不定式放在逗号后的用法是不对的，除非两逗号间加的是同位语从句，那么不定式可以和主句联系起来。 | 
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发表于 2011-1-20 07:20:01
