今晚（時間 / 這個夜晚本身）
兩個意思指的是同一個夜晚，差別只在文法角色：一個當副詞（回答「什麼時候」），一個當名詞（把這個夜晚當成一個東西或事件）。
this night (adverb) · r · A1
On or during the night of today.
今晚
核心畫面
The night of the day we're in right now. Mostly it works like 'when' — on this night; but it can also be talked about as a thing or event ('tonight will be fun'). Same night, two hats.
可以想成「我們現在正過著的這一天的那個晚上」。大多時候它像在回答「什麼時候」——在今晚做某事；但有時也被當成一個東西…更多收起
可以想成「我們現在正過著的這一天的那個晚上」。大多時候它像在回答「什麼時候」——在今晚做某事；但有時也被當成一個東西、一場活動來講（像「今晚會很好玩」）。同一個夜晚，只是戴了兩頂不同的文法帽子。One branch
原始詞典資料3 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。
tonightadv/təˈnaɪt/
- 1
During the night following the current day; during the evening of today.
- I want to party tonight!
- I had a wonderful time with you tonight.
- 2
obsoleteLast night.
- Besides, I met Lord Bigot and Lord Salisbury, With eyes as red as new-enkindled fire, And others more, going to seek the grave Of Arthur, whom they say is killed to-night On your suggestion.
- I dreamt tonight that I did feast with Caesar, And things unluckily charge my fantasy;
tonightnoun/təˈnaɪt/
- 1
The nighttime of the current day or date; this night.
- Tonight is the night.
- I have high hopes for tonight.
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。