Today's consumers buy, enjoy, use and discard more types of goods than could possibly have been imagined even a few years ago
后面的have been imagined是被动语态吗？
句子中的have been imagined是现在完成时的被动语态。又如；
Many bridges have been built over the Changjiang River in the past thirty years.
Many bridges have been built over the Changjiang River in the past thirty years.
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