請(qǐng)問(wèn)：這句子中不定式作什么成分?
The professor is said to have made some advance in his research in the past year.
句中不定式TO HAVE MADE 作什么語(yǔ)?
能把每一部分充當(dāng)什么成分說(shuō)出來(lái)最好!
進(jìn)一步說(shuō)明一下我的問(wèn)題：The Minister is believed to be thinking of imposing new taxes to raise extra revenue.書(shū)上說(shuō)此句的不定式是作主語(yǔ)的補(bǔ)語(yǔ)，這里也有IS BELIEVED TO固定搭配。所以固定搭配不是重點(diǎn)。我只想知道IS SAID TO這固定搭配中的不定式是作啥語(yǔ)的。