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To commentate is to talk about a live event — usually sport — on television or radio while it is happening. You say what you see, explain the rules, and often give your view: who is playing well, why a team is losing. The person who does this is a commentator. Though actually, English made this verb rather late, by cutting it out of the noun commentator. Careful older speakers still prefer “give a commentary” or “be a commentator.” Sports TV uses commentate all the time now. You commentate a match or a race, not a quiet dinner.
擔任實況解說、當球評（電視或廣播邊看邊講）
組成A back-formation from commentator: people took the noun and made a verb. You can also see it as comment + -ate (a suffix that makes a verb).
同家族的字
- commentatorthe noun this verb was cut from; the person who commentates
- commentarythe live talk or notes that a commentator gives
- commenta shorter word for a remark; commentate is the live-event kind
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
commentateverb/ˈkɒ.mənˌteɪt/
- 1
To provide a commentary; to act as a commentator; to maintain a stream of comments about some event.
- For the radio audience he will commentate on the match.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。