Translation guide
Expressing that two or more events occur simultaneously, or referring to a specific point in time that is shared.
The learner wants to say that two actions or events happen concurrently.
Attach to the ます-stem of a verb to mean 'while doing'. The subject must be the same for both actions.
I studied while listening to music.
Used after dictionary form of verbs or nouns to mean 'at the same time as'. Can be used when subjects differ.
The phone rang at the same time as he came in.
Literally 'together with', but can imply simultaneous occurrence when used with events.
A power outage occurred at the same time as the earthquake.
Adverb meaning 'simultaneously'. Can be used at the beginning of a sentence.
The two started speaking at the same time.
The learner wants to refer to a particular moment that is identical for two or more things.
The learner wants to introduce a contrasting or additional point, similar to 'at the same time' as a discourse marker.
会議は毎週同時刻に開かれる。
The meeting is held at the same time every week.
この計画は魅力的だ。しかし同時にリスクも大きい。
This plan is attractive. At the same time, however, the risks are great.