shirabe.org
#263
Common
Meaning
    1. it is ... that ...; precisely; in particular; definitely; for sure; only (when, after, because, etc.)
      emphasizes preceding word or phrase
      It's patience that counts.
    2. although; while; it is the case that ... but
      as こそあれ, こそすれ, こそするが, etc.
      Young as he is, he is equal to the task.
    3. it is precisely because ... that ...; only because ...
      after conditional -ba form of verb
      It is precisely because I have your best interests at heart that I am saying this.
    4. not at all; not in the slightest; absolutely not; never
      after -nai stem of verb +
Sentences