がてら adds an incidental purpose to an activity; かたがた combines purposes formally; かたわら describes a parallel activity. 散歩がてら買い物する is shopping while out for a walk. お礼かたがた訪ねる combines a visit with thanks. 仕事のかたわら書く describes writing alongside an ongoing job. The time span and register help select the expression.
がてら — one trip, two errands · かたがた — two purposes, formally stated · かたわら — a second life alongside the first
Sentences
6 sentences, word by word
がてら — one trip, two errands
plain past
。
Hover, tap, or tab through the words.
散歩
さんぽ ［0］
a walk
noun · the activity that was happening regardless
Ask Rikai
がてら
がてら
while I was at it
conjunction · one outing serving two errands
がてらN1while also · one trip
Ask Rikai
買い物
かいもの ［0］
shopping
noun · the errand that rode along
Ask Rikai
を
を
marks the direct object
particle · pronounced お
Ask Rikai
した
した
did
plain past of する · 買い物をする is the set phrase
Ask Rikai
I did the shopping on the walk I was taking anyway.
かたがた — two purposes, formally
polite
。
Hover, tap, or tab through the words.
お礼
おれい ［0］
thanks
noun · the お is fixed in this polite form
Ask Rikai
かたがた
かたがた
and also
conjunction · both purposes deliberate, in formal register
かたがたN1and also · formal
Ask Rikai
報告
ほうこく ［0］
a report
noun · 報告する to report something
Ask Rikai
に
に
in order to
particle · purpose before a verb of going — 報告に伺う, not a destination
Ask Rikai
伺いました
うかがいました
called on them
humble 伺う · visiting someone above you
Ask Rikai
I called on them to thank them and to report.
かたわら — a second life
plain
、。
Hover, tap, or tab through the words.
彼
かれ ［1］
he
pronoun · the person with two occupations
Ask Rikai
は
は
as for — the topic
particle · written は, read わ
Ask Rikai
会社
かいしゃ ［0］
a company
noun · where the main occupation is
Ask Rikai
に
に
at (an employer)
particle · 勤める takes に for who you work for, not で
Ask Rikai
勤める
つとめる ［3］
work at
ichidan verb · 勤める takes に for the employer
Ask Rikai
かたわら
かたわら
alongside
conjunction · a second activity running for years, not an afternoon
かたわらN1alongside · for years
Ask Rikai
小説
しょうせつ ［0］
novels
noun · the parallel occupation
Ask Rikai
を
を
marks the direct object
particle · pronounced お
Ask Rikai
書いて
かいて
writing
て-form of 書く · linking into いる
Ask Rikai
いる
いる
is (doing)
plain いる · an ongoing arrangement
Ask Rikai
He writes novels alongside his job at a company.
がてら — on the way somewhere
plain past
。
Hover, tap, or tab through the words.
駅
えき ［1］
station
noun · where the trip was headed
Ask Rikai
へ
へ
toward
particle · direction of travel — に would work too, へ stresses the heading
Ask Rikai
行き
いき ［0］
going
ます-stem of 行く · the stem is what がてら attaches to
Ask Rikai
がてら
がてら
on the way
conjunction · the trip was happening; the visit rode along
がてらN1on the way · while going
Ask Rikai
友達
ともだち ［0］
a friend
noun · the person visited
Ask Rikai
の
の
links noun to noun
particle · A の B = B belonging to A
Ask Rikai
家
いえ ［2］
house
noun · いえ the building, うち one's own home
Ask Rikai
に
に
to; at; into
particle · a point something reaches — a place, a time, a person, or a state
Ask Rikai
寄った
よった
dropped in
plain past of 寄る · a short stop on the way
Ask Rikai
I dropped in on a friend on my way to the station.
ついでに — what you would actually say
plain past
。
Hover, tap, or tab through the words.
出かけた
でかけた
went out
plain past of 出かける · the trip that was happening
Ask Rikai
ついでに
ついでに
while I was at it
conjunction · the everyday がてら, and far more common in speech
ついでにN3while I'm at it
Ask Rikai
買って
かって
bought
て-form of 買う · linking into きた
Ask Rikai
きた
きた
and came back
てくる · went, did it, returned
Ask Rikai
I was out anyway, so I picked one up.
かたわら — study alongside work
polite
、。
Hover, tap, or tab through the words.
彼女
かのじょ ［1］
she
pronoun · the person doing both
Ask Rikai
は
は
as for — the topic
particle · written は, read わ
Ask Rikai
仕事
しごと ［0］
work
noun · a noun before かたわら needs の
Ask Rikai
の
の
(required link)
particle · かたわら needs の after a noun — structural, not possessive
Ask Rikai
かたわら
かたわら
alongside
conjunction · the years-long parallel, not a single day
かたわらN1alongside · long-term
Ask Rikai
大学
だいがく ［0］
university
noun · where the second activity happened
Ask Rikai
で
で
in; at — where it happens
particle · where the action happens, or the manner it happens in
Ask Rikai
勉強
べんきょう ［0］
study
noun · 勉強する to study
Ask Rikai
しました
しました
did
polite past of する · completing 勉強する
Ask Rikai
She studied at university while working.
Structure
What each one attaches to
散歩 / 買い物 / 行き＋がてら
散歩がてら買い物をした. Both halves happen on the same outing, and the first is the one you were doing anyway.
お礼 / ご挨拶 / お見舞い＋かたがた
お礼かたがた伺いました. Nouns only, and almost always the polite お／ご ones. This is letter and business Japanese.
仕事 / 勉強の＋かたわら
仕事のかたわら. A noun needs の in front; a verb takes the dictionary form. The timescale is years, not an afternoon.
出かけた＋ついでに
出かけたついでに買ってきた. Same meaning as がてら with none of the formality, and far more common in speech.
Meaning
One outing, one visit, one second career
がてら is one trip. You were going for a walk anyway, so you did the shopping too: 散歩がてら買い物をした. One activity provides an occasion for another; either can be the chief purpose in context.
かたがた formally combines purposes.お礼かたがたご報告に伺いました combines thanks and a report in one visit. It is common in polite writing and business speech, and follows a noun in this use.
かたわら is a second life.会社に勤めるかたわら、小説を書いている — holds down a job and writes novels. The two run in parallel over years, which is what separates it from the other two entirely.
Time scale helps, but it is not a hard rule.がてら and かたがた often concern a single occasion; かたわら commonly describes ongoing parallel activities. Register and the relation between the two activities also matter.
In everyday speech, ついでに or simpler phrasing may be more natural.ついでに covers what がてら does, and 〜ながら or a plain second sentence covers the rest. These three are for writing and for the JLPT.
Watch out
Where these three go wrong
かたわら for an afternoon
かたわら often describes a parallel activity sustained over time, so a single afternoon outing usually calls for がてら.
かたがた in conversation
It is letter and business Japanese. Said to a friend it sounds like reading from a formal notice — ついでに is what belongs there.
Forgetting the の before かたわら
A noun needs it: 仕事のかたわら. A verb does not — 勤めるかたわら attaches straight to the dictionary form.
Also asked
Questions people ask about がてら, かたがた and かたわら
What separates them?
Timescale. がてら is one outing, かたがた one formal occasion, and かたわら a stretch of years.
がてら or ついでに?
Same meaning, different register. ついでに is what people say; がてら is what gets written, and it is slightly more elegant.
What does がてら attach to?
A noun or a ます-stem: 散歩がてら, 駅へ行きがてら. Not the dictionary form.
Is かたがた only for polite nouns?
Almost. In practice it appears with お礼, ご挨拶, お見舞い, ご報告 — the vocabulary of formal visits, which is where the pattern lives.
Can かたわら take a verb?
Yes, in the dictionary form: 会社に勤めるかたわら. The の is only needed when a noun comes first — 仕事のかたわら. A verb attaches directly.
Do I need these to pass N1?
For recognition, yes — all three appear in the reading and grammar sections. For production, ついでに and a second sentence will carry you through almost any real situation.
