小一英文 就甘一幅圖有個人跑緊步，填running 老師話錯，話要填run 因為無I /He /She /It ,所以唔洗加ing 落去 但我唔明，有無人可以解釋比我聽呀？

圖：有個人跑(緊)步 ← 題意指定寫「句子」：I am running. / He is running. / She is running. / It is running.
圖：有個人跑(緊)步 ← 題意指定寫「單字」：run → 跑(緊)步：係動詞。running 係動名詞。
(註：run / running：也可當名詞。running：也可當形容詞。)

only can use (run)