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關閉窗口 ■on schedule 按照預定時間，及時，準時
The train arrived on schedule. 火車按時到達。
The alarm woke him on schedule. 鬧鐘準時把他鬧醒。
■on shore 在岸上，在陸上
Passengers can speak to their friends on shore through wireless telephone. 乘客可以通過無線電話和岸上的朋友講話。
When the ship arrived at the port, some sailors went on shore. 船到港口后，有些水手上岸去了。
■on show 在展出；在陳列
Scores of imported cars are on show here. 幾十輛進口車正在這里展出。
The collection is on show at the
■on strike 在罷工（罷課、罷市）
The students are out on strike. 學生舉行罷課。
The workers have been on strike for two weeks now. 工人已經罷工兩星期。
■on time 準時
The trains run on time. 火車很準時。
We have to arrive on time at the doctor’s office. 我們得準時到達醫生的辦公室。
■on tiptoe 踮著腳；盼望
They stood on tiptoe to get a better look at the parade. 他們踮起腳以便把游行場面看得更清楚些。
The children were on tiptoe for vacation to begin. 孩子們急切地盼望假期開始。
【注】其中的tiptoe有時可用復數，且此時可以有物主代詞修飾。如：
We crept around on (our) tiptoes so as not to disturb him. 為了不打擾他，我們躡手躡腳地走過去。
■on top 在上邊；處于優勢
The green book is at the bottom of the pile and the red one is on top. 綠皮的書在那一摞的底下，紅皮的在上邊。
Lendl was on top throughout the match. 倫德爾在比賽中始終占優勢。
■on trial 在試用；在受審
The clerk was employed on trial. 那個職員是試用的。
Take the machine on trial for a week. 把這機器試驗一星期。
He was on trial for murder. 他因謀殺罪而受審。
■on vacation 在休假
She plans to go on vacation for most of August. 她打算利用8月的大部分時間度假。
They have gone to
■on view 供人觀看；陳列著
The exhibition is on view until September. 展覽將辦到9月。
The latest summer fashions are now on view in the big shops. 最新的夏裝款式目前正在各大商店中展出。
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