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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