The adverb form: you drop it into a sentence to say 'this is certainly true, and I am not going to argue about it'. It works like 'certainly', 'definitely' or 'without doubt', but it is more formal and more forceful — it does not just say you are sure, it says nobody could sensibly disagree.

The adverb form這是副詞形式: you drop it into a sentence你把它放進句子裡 to say 'this is certainly true, and I am not going to argue about it'表示「這絕對是真的，我不打算爭論」。It works like它的作用像 'certainly', 'definitely' or 'without doubt'「certainly」、「definitely」或「without doubt」, but it is more formal and more forceful不過語氣更正式、更強烈──it does not just say you are sure它不只是說你很確定, it says nobody could sensibly disagree而是說沒有人能合理地反對。

Two normal positions. Before an adjective or noun phrase: 'She is unquestionably the best player on the team.' Or at the front of a sentence, with a comma, to colour the whole statement: 'Unquestionably, the plan cost more than they told us.' It can also sit before the main verb: 'He unquestionably knew what he was doing.' You meet it in writing, in argument, in reviews, in speeches — anywhere someone wants to sound settled.

Two normal positions兩個常見的位置。Before an adjective or noun phrase放在形容詞或名詞片語前面: 'She is unquestionably the best player on the team.'「她無庸置疑是隊上最好的球員。」Or at the front of a sentence, with a comma或是放在句首、後面加逗號, to colour the whole statement為整句話定調: 'Unquestionably, the plan cost more than they told us.'「無庸置疑，這個計畫花的錢比他們說的多。」It can also sit before the main verb它也可以放在主要動詞前面: 'He unquestionably knew what he was doing.'「他無庸置疑地知道自己在做什麼。」You meet it in writing, in argument, in reviews, in speeches你會在寫作、辯論、評論、演講裡遇到它──anywhere someone wants to sound settled任何想聽起來篤定的場合。

Because it is so strong, it can be a warning sign: writers often reach for it exactly when the point is arguable, hoping the confidence will carry the reader past the gap. A careful writer saves it for things that really are beyond doubt.

Because it is so strong正因為語氣這麼強, it can be a warning sign它反而可能是個警訊: writers often reach for it exactly when the point is arguable作者常常正是在論點站不住腳的時候使用它, hoping the confidence will carry the reader past the gap希望這股自信能讓讀者忽略當中的漏洞。A careful writer saves it for小心的作者會把它留給 things that really are beyond doubt真正無庸置疑的事情。

There is one more use to notice, which learners often miss: it also appears as a full answer, on its own, meaning a firm yes. 'Was it worth the money?' 'Unquestionably.' That use is a little formal and a little dry, and it sounds educated.

There is one more use to notice還有一個用法值得注意, which learners often miss學習者常常會忽略: it also appears as a full answer, on its own它也可以單獨當成一個完整的回答, meaning a firm yes意思是堅定的「是」。'Was it worth the money?' 'Unquestionably.'「這值得這個價錢嗎？」「無庸置疑。」That use is a little formal and a little dry這個用法有點正式、有點乾脆, and it sounds educated而且聽起來很有學問。