1.
to think, to believe
To have an opinion or belief about something. Often used with と思う to express one's thoughts.
そう思います。
I think so.
I thought Japanese would be difficult, but when I tried studying it, it was fun.
2.
to feel, to sense
To have an emotional response or impression. そう思う (I feel that way).
3.
to expect, to suppose
To anticipate or assume something. 雨が降ると思う (I think it will rain).
TRANSITIVITY: 他動詞 (transitive). No pair verb. Pattern: 〜と思う (think that ~) or Xを思う (think of X).
ASPECT: ている indicates ongoing thought or opinion. 思っている = 'think/believe' (current opinion).
COMMON PATTERNS:
- 〜と思う (think that ~)
- どう思う (what do you think?)
- そう思う (I think so)
- 〜と思っている (believe/have the opinion that)
NOTE: Japanese often puts negatives inside the quote: 来ないと思う rather than 来ると思わない.
Compare: 考える implies more deliberate reasoning/consideration.