Student or Learner
Could you please explain to me why we have, here, a verb followed by two preposition, is it correct?
It were tampered with by mankind.
And we do have multi-word phrasal verbs: catch up on, look down on, etc.
NOT A TEACHER
(1) As usual, you have asked an excellent question. And, as usual, the teachers have given you and me excellent answers.
(2) We non-teachers are currently allowed to give our opinions, so I should like to do so. Remember: if my opinions are different from the teachers', you should accept the teachers' as the correct ones.
(3) Someone damaged my car. > My car was damaged (by someone).
(4) Someone tampered with my car, > My car was tempered with (by someone).
(a) I believe that some people feel that the word "with" in "tamper with" is NOT a preposition. They use a word like "particle." They feel that "tamper with" is a unit.
For example, if you simply said "My car was tampered with," that would be, I believe, a grammatically correct sentence. (Of course, you could not say "My car was tampered." So "tamper with" does seem to be a unit, doesn't it.)
(5) Therefore, it is only my opinion that "It was tampered with by mankind" could
be analyzed as:
(a) It = subject.
(b) was tampered with = passive verb phrase. (= It was damaged )
(c) by = preposition.
(d) mankind = object of the preposition.
Thus your sentence has only one preposition: "by."
Really I highly appreciate all your answers, you deserve more than thanks
I didn't pay attention that it was in the passive form, because I got confused by this structure, but now it's clear.
Thank you so much for your efforts and helps.