~とともに
Together with someone, alongside an event, or as things change
You’ll be able to describe acting together, events occurring together, and linked developments with ~とともに.

芽衣は祖父とともに、静かな森の小道を歩きました。
mei wa sofu to tomo ni, shizuka na mori no komichi o arukimashita.
What do you think this sentence means?
Mei walked along the quiet forest path together with Grandfather.
Do something together
~とともに means “together with” when used with a person or group. In formal writing, it can also mean “along with” for events or gradual changes.
チームの仲間とともに、大会に参加しました。
chiimu no nakama to tomo ni, taikai ni sanka shimashita.
I took part in the competition together with my teammates.
雨がやむとともに、空が明るくなりました。
ame ga yamu to tomo ni, sora ga akaruku narimashita.
As the rain stopped, the sky grew brighter.
Link a companion, event, or change
Use noun + とともに for a companion or a change occurring alongside something. Use dictionary-form verb + とともに for events that happen together. This pattern is more formal than 一緒に.
時代とともに、町の景色も変わった。
jidai to tomo ni, machi no keshiki mo kawatta.
Along with the times, the town’s scenery changed too.
~と一緒に vs ~とともに
Both mean “together with” a person. ~と一緒に is everyday speech; ~とともに says the same thing in a formal or written style.
~と一緒に, together with
家族と一緒に、旅行に行きました。
kazoku to issho ni, ryokou ni ikimashita.
I went on a trip with my family.
Natural in conversation.
~とともに, together with (formal)
家族とともに、旅行に行きました。
kazoku to tomo ni, ryokou ni ikimashita.
I went on a trip together with my family.
Same meaning; fits a letter, speech, or written report (for example 家族とともに、元気に過ごしております).
社長は社員とともに、会社の五十周年を祝った。
shachou wa shain to tomo ni, kaisha no gojisshuunen o iwatta.
The president celebrated the company’s fiftieth anniversary together with the employees.
年齢とともに、体がだんだん硬くなってきた。
nenrei to tomo ni, karada ga dandan kataku natte kita.
With age, my body has gradually become stiffer.
試合終了の笛が鳴るとともに、観客から大きな拍手が起こった。
shiai shuuryou no fue ga naru to tomo ni, kankyaku kara ookina hakushu ga okotta.
As the final whistle blew, loud applause rose from the crowd.
7 more examples in the grammar path — free for a limited time.