Kotomora
JLPT N2ConstructionWritten
Furigana

けいこうがあるShow a tendency or trend

けいこうがある analytically describes a recurring pattern or a direction of change seen in a person, group, phenomenon, or set of data. It can report neutral, positive, or negative trends.

What kind of claim it makes

The noun けいこう refers to a pattern or direction found across repeated observations. The construction therefore presents an analytical generalization: it does not merely say what happened once, but what commonly happens or how something tends to change.

Noun and clause patterns

The noun pattern names the trend directly, while the clause pattern states the recurring action or change.

きんねんていようにはがたけいこうがある

In recent years, household appliances have shown a trend toward smaller sizes.

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このいきでは、じゅうねんかんなつへいきんおんじょうしょうするけいこうがある

In this region, average summer temperatures have tended to rise over the past ten years.

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ろくると、かれいそがしいときほどしょくけいこうがある

The records show that the busier he is, the more he tends to skip meals.

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Ground the trend in evidence

けいこうがある is most convincing when the sentence identifies a group, period, repeated observation, or source of data. The trend itself need not be undesirable: the same construction can describe improvement, decline, preference, recurring behavior, or a neutral statistical direction.

A positive tendency

このがっこうでは、ぜんよりせいしゅてきしつもんするけいこうがある

At this school, students now tend to ask questions on their own more than before.

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The construction reports the direction of change without adding criticism.

Choosing among tendency expressions

Use けいこうがある for an analytical generalization based on observations. がち is more compact and often describes an undesirable recurring behavior or state. usually points to a mild condition currently noticeable rather than a broad trend. きらいがある makes a distinctly critical judgment about an undesirable bias in a person or institution.

More examples

ぜんこく調ちょうでは、わかだいかみもうしこみしょけるけいこうがある

A nationwide survey shows that younger generations tend to avoid paper application forms.

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さんねんかん、このいきではえるけいこうがある

Over the past three years, the number of vacant homes in this area has tended to increase.

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このくすりは、ちょうかん使ようするとこうよわまるけいこうがある

The effect of this medicine tends to weaken with long-term use.

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とうしゃようデータでは、しゅうまつどうちょうかんながくなるけいこうがある

Our usage data shows that video viewing times tend to be longer on weekends.

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かいろくによると、さんにんずうおおいほど一人ひとりたりのはつげんかんみじかくなるけいこうがある

Meeting records indicate that as the number of participants increases, speaking time per person tends to decrease.

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さいばいけんでは、このひんしゅかんれいじつあまみがつよくなるけいこうがある

Cultivation trials show that this variety tends to produce sweeter fruit in cold regions.

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さいきんのアンケートでは、ようしゃつづきがふくざつだとちゅうでやめるけいこうがある

A recent survey shows that users tend to quit partway through when the procedure is complicated.

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