This is the 5566th most frequent Japanese word.
きのう
"きのう" means "yesterday" in English.
In this sentence, 'きのう' is used as a time adverb to indicate that the action or state occurred on the previous day.
きのうはとても寒かったです。
Yesterday was very cold.
Here, 'きのう' functions as a temporal marker specifying when the activity of watching a movie happened.
きのう、友達と映画を見ました。
I watched a movie with my friend yesterday.
In this example, 'きのう' functions as part of a possessive phrase, showing that the homework is associated with the previous day.