I need some help with the sentence below. Things like ~ている、~でいる when finishing the verb as in [似]{に}ている、[読]{よ}んでいる are okay for me. But next sentence is something else, because the ending でいた is standing after a noun, not a verb.


  • Could you please explain, why でいた was used here, in this sentence?
  • And when we can usually use grammar like this?
  • It's just a basic te-form. – oldergod Feb 17 '15 at 0:41

This is simply a valid combination of two things you already know:

  • te-form + いた forms the past-progressive
  • the te-form of the copula is で

so we have:

  • 日本語を勉強するつもりだ -> intend to study Japanese
  • 日本語を勉強するつもりでいた -> was intending to study Japanese

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