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■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 British Museum. 那批收藏品目前在大英博物館展出。

■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 France on vacation. 他們到法國去度假了。

■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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