有讀者朋友在我們的“用戶留言”問，playground前用介詞on還是in，我們查到手頭的一本金盾出版社出版的《英語基礎(chǔ)詞匯用法詞典》(周貞雄編著)，該書認(rèn)為：表示“在運(yùn)動(dòng)場(chǎng)上”或“在操場(chǎng)上”，playground前既可用介詞in也可用介詞on，但以用in為普通，并舉如下：
The children were all in [on] the playground. 孩子們都在操場(chǎng)上。
They are playing baseball in the playground. 他們?cè)谶\(yùn)動(dòng)場(chǎng)上打棒球。
The sports meeting was held on the playground. 運(yùn)動(dòng)會(huì)在操場(chǎng)上舉行。
我們也贊成這個(gè)觀點(diǎn)，下面是本站編輯從不同權(quán)威詞典查到的例句，可供參考：
■用in的例證：
1. He bullies all other little boys in the playground. 他在運(yùn)動(dòng)場(chǎng)上稱王稱霸，欺負(fù)其他小男孩。見商務(wù)印書館的《朗文當(dāng)代高級(jí)英語辭典》bully詞條
2. He was bashed up in the playground by some older boys. 有幾個(gè)年齡較大的男孩子在操場(chǎng)上對(duì)他動(dòng)武。見商務(wù)印書館的《牛津高階英漢雙解詞典》(第四版)bash詞條
3. children skipping in the playground 在操場(chǎng)中跳繩的兒童，見商務(wù)印書館的《牛津高階英漢雙解詞典》(第四版)skip詞條
4. The children were out in the playground letting off steam. 那些孩子在操場(chǎng)上玩，宣泄過剩的精力。見商務(wù)印書館的《牛津高階英漢雙解詞典》(第四版)steam詞條
5. The children were running about in the playground. 孩子們?cè)谶\(yùn)動(dòng)場(chǎng)上跑來跑去。見上海外教社的《朗文多功能分類詞典》
6. There were children fighting in the playground. 見《劍橋高級(jí)英語詞典》 (Cambridge Advanced Learner’s Dictionary)的fight詞條
■用on的例證：
The children ran out and played on the playground at recess. 休息的時(shí)候孩子奔出來到操場(chǎng)上玩耍。見王文昌主編的《英語搭配大詞典》
The boys chalked out goalposts on the playground wall. 男孩子們?cè)谶\(yùn)動(dòng)場(chǎng)的墻上用粉筆畫上了球門柱。見商務(wù)印書館的《牛津高階英漢雙解詞典》(第四版)chalk詞條
■另補(bǔ)充用at的例證：
He supervised the children at the playground. 他看管在操場(chǎng)上的孩子們。見外研社的《當(dāng)代美國英語學(xué)習(xí)詞典》的supervise詞條
