badではなく、worse?

Question

テキストに
Studying until late at night only seemes to make my test score worse.
というセンテンスがありました。
bad ではなく、worse なのはなぜでしょうか？

未設定 · Answer

StudyingとNot studyingの比較ですので、比較の「worse」を使います。

Studying until late at night only seems to make my test score worse (than if I do not study until late at night).

Studying until late at night only seems to make my test score worse (than it would have been otherwise).

Not getting a good night's sleep is worse than not studying at all.

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