1) "bothered" is probably adjectival here, but "can't be bothered" (and variants) is an idiomatic expression that is perceived by speakers as a whole, rather than as the literal sum of its individual parts. 2) "based on" is a common phrase which is not normally perceived as a passive form. While the implied agent is presumably logically the CEO, it would be odd and unnatural to make that explicit in the sentence ("is based by the CEO on her second book").
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Anonymous'based on' is not used in a passive sentance?based on is already passive.
AnonymousHow about this sentence - 1) The result of the leadership contest was based on the boardroom vote (by the board) Is it possible to use the 'by the board '?Yes, but no one is going to do that. It's not very idiomatic.
AnonymousI was told and I have read that all passive sentences can always
AnonymousSo 'based on ' is a passive but does not have a 'by so-so' agent ?"based on" is technically analysable as a passive form, but as I said, it is not normally perceived as such by native speakers, at least not in typical uses. A "by" agent is unusual, though not completely impossible.
AnonymousBecause it belongs to a special grou
AnonymousSo 'based on' is equal to 'by' ?No. 'X is based on Y' means that Y is the foundation on which X is built (when talking about ideas, not physical objects).
AnonymousSo 'based on' is equal to 'by' ?No, if X is "based on" Y, it means that Y forms the foundation of X (usually in an abstract rather than physical sense).