1

Now it is proven that that medicine is harmful to people.

Now it is proved that that medicine is harmful to people

Here, are proved and proven interchangeable? .

Soumya Ghosh
  • 1,485
  • 13
  • 28
  • 42
  • 2
    There are a number of verbs in English with two past tense/participle forms. You will find some of them at: https://www.quickanddirtytips.com/education/grammar/10-verbs-with-two-past-tense-forms-that-creeped-or-crept-into-english and https://www.englishforums.com/English/TwoPastParticiplesSame-Verb/mvmqx/post.htm – Ronald Sole May 21 '18 at 17:00

0 Answers0