GRAMMAR
〜一方だ
continue to (tendency)
Explanation
NOTE
〜一方だ describes a trend that keeps moving in one direction — always increasing, worsening, or improving.
物価が上がる一方だ。
Prices keep going up.
This grammar expresses a continuous, unchanging trend in one direction, often with a negative nuance.
NOTE
It attaches to the dictionary form of a verb. It cannot be used for temporary or reversible changes.
STRUCTURE
V辞
一方だ気温が上がる一方だ。
Kion ga agaru ippou da.
The temperature keeps rising.
人口が減る一方だ。
Jinkou ga heru ippou da.
The population keeps declining.
彼女の日本語は上手くなる一方だ。
Kanojo no Nihongo wa umaku naru ippou da.
Her Japanese just keeps getting better.
Practice exercises
1
最近、残業が増える一方だ。
Lately, overtime work keeps increasing.
Answer
一方だ
2
環境の問題は悪くなる一方だ。
Environmental problems keep getting worse.
Answer
一方だ
3
彼の成績は落ちる一方だ。
His grades keep falling.
Answer
一方だ
4
高齢化の影響で、介護が必要な人が増える一方だ。
Due to the aging population, the number of people requiring nursing care continues to increase.
Answer
一方だ
5
高齢化の影響で、介護が必要な人が増える一方だ。
Due to the aging population, the number of people requiring nursing care continues to increase.
Answer
一方だ
6
少子化の影響で、地方の過疎化が進む一方だ。
Due to the declining birth rate, rural depopulation continues to worsen.
Answer
一方だ
7
物価が上がる一方だ。
Prices keep going up.
Answer
一方だ
8
気温が上がる一方だ。
The temperature keeps rising.
Answer
一方だ
9
人口が減る一方だ。
The population keeps declining.
Answer
一方だ