原是

yuánshì
  1. (literary) to originally be
  2. to originally be

Wiktionary

Entry Composition

=1 原 Yuán
  1. surname Yuan
  2. (Japanese surname) Hara
=1 原 yuán
  1. former
  2. original
  3. primary
  4. raw
  5. level
  6. cause
  7. source
=2 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=2 是 shì variant of 是 shì