to在这里做什么意思,谁能解释下.Key provisions of the PATRIOT Act,such as the authority to conduct roving wiretaps,were set to expire in 2005.这里的 to conduct roving wiretaps的to是什么用法?能换成can么?

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to在这里做什么意思,谁能解释下.KeyprovisionsofthePATRIOTAct,suchastheauthoritytoconductrovingwiretaps,weresettoexp

to在这里做什么意思,谁能解释下.Key provisions of the PATRIOT Act,such as the authority to conduct roving wiretaps,were set to expire in 2005.这里的 to conduct roving wiretaps的to是什么用法?能换成can么?
to在这里做什么意思,谁能解释下.
Key provisions of the PATRIOT Act,such as the authority to conduct roving wiretaps,were set to expire in 2005.
这里的 to conduct roving wiretaps的to是什么用法?能换成can么?

to在这里做什么意思,谁能解释下.Key provisions of the PATRIOT Act,such as the authority to conduct roving wiretaps,were set to expire in 2005.这里的 to conduct roving wiretaps的to是什么用法?能换成can么?
to是不定式符号,不能换成can+动词原形,因为这样的话是谓语动词形式,这里要求一个非谓语动词.

这里to 是个固定用法,如果一定要翻译的话就是 的 的意思! 。。。。的权力!can绝对不能用!