Expressions (phrases, clauses, etc.), Particle
indicates word or phrase being defined
金持ちが必ずしも幸福とは限らない。The rich are not always happy. used for quoting (thoughts, speech, etc.)
indicates contrast or adds emphasis to a negative statementsee と
with
more emphatic than とsee と
(not) as much as; (not) so much as
with neg. verb
the fact that; to think that; such a thing as
indicates surprise, disbelief, anger, etc.; sometimes at sentence end