～おきに
At regular intervals
You'll be able to describe actions or spacing that repeat after a fixed interval.
母は一日おきに花に水をやります。
haha wa ichinichi oki ni hana ni mizu o yarimasu.
What do you think this sentence means?
My mother waters the flowers every other day.
Leave a regular gap
～おきに describes repeated events separated by a gap. With 一日おきに, one whole day is skipped, giving an every-other-day pattern.
三十分おきにバスが来ます。
sanjuppun oki ni basu ga kimasu.
A bus comes every thirty minutes.
Form and use ～おきに
For hours and minutes, 一時間おきに normally means every hour. For days or counted objects, pay attention to the skipped unit: 一日おきに is every other day. Confirm the actual schedule instead of translating every phrase mechanically.
三十分おきにバスが来ます。
sanjuppun oki ni basu ga kimasu.
A bus comes every thirty minutes.
椅子を一つおきに使います。
isu o hitotsu oki ni tsukaimasu.
We use every other chair.
Every day or every other day
With days, 一日ごとに includes each day. 一日おきに leaves one whole day between occasions. For hours and minutes, おきに usually gives the actual interval, so this day-based contrast does not transfer directly.
一日ごとに
一日ごとに写真を撮ります。
ichinichi goto ni shashin o torimasu.
I take a photo every day.
A photo is taken on each day; no day is skipped.
一日おきに
一日おきに写真を撮ります。
ichinichi oki ni shashin o torimasu.
I take a photo every other day.
One full day is left between photo days.
この薬は一日おきに飲んでください。
kono kusuri wa ichinichi oki ni nonde kudasai.
Please take this medicine every other day.
一週間おきに、祖母の家に行きます。
isshuukan oki ni, sobo no ie ni ikimasu.
I go to my grandmother's house every other week.
コンサートの席は、一つおきに座ってください。
konsaato no seki wa, hitotsu oki ni suwatte kudasai.
Please sit in every other seat at the concert.
7 more examples in the grammar path — free for a limited time.