昨日
also: さくじつ
Meanings
1
Refers to the day before today. It can be used as a noun, as in 昨日の夜, or adverbially before a clause. きのう is the ordinary spoken reading; さくじつ is more formal.
It rained all day yesterday.
I met a friend yesterday.
A new policy was decided at yesterday's meeting.
Usage patterns
- 昨日の〈時〉yesterday's (morning/night/etc.)
I talked with a friend on the phone last night.
- 昨日から〈事〉since yesterday
I've had a headache since yesterday.
- 昨日まで〈事〉until yesterday
It had been raining until yesterday.