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1704950287
She read the book on the recommendation of a friend．由于一个朋友的推荐她看了这本书。
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1704950289
I came on your invitation．我是在你们的邀请下来的。
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1704950291
（表示目的）去（做某事）：
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She had come on a visit to England．她来访问英国。
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1704950295
She had been away on a long trip．她离开去长途旅行了。
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They had journeyed to Russia on a mission．他们到俄国去执行一项任务。
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1704950299
引起许多短语作状语：
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1704950301
That’s very satisfactory on the whole．总的说来这很令人满意。
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1704950303
Don’t give it up on any account．不管有什么理由都不要放弃。
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1704950305
The school bus arrived at school on schedule．校车按时来到学校。
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1704950307
She looked at him now and then on the sly．她不时偷偷地瞧他。
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1704950309
She always acts on impulse．她总是冲动行事。
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1704950311
He accepted the cup on behalf of the team．他代表球队接受了奖杯。
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1704950313
引起各种短语作表语：
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1704950315
I’ve always been on my guard since then．从那时起我一直很警惕。
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1704950317
They were on the lookout for pickpockets．他们提防扒手。
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1704950319
She was on night duty．她值夜班。
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1704950321
At the moment I am on tour．现在我正在做巡回演讲。
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1704950323
Crimes are on the rise．犯罪率正在上升。
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The workers are on strike．工人们正在罢工。
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关于（某个题目），在（某个问题上）：
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1704950329
Write a term paper on Shakespeare．写一篇关于莎士比亚的学期论文。
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I differ from you on that point．在这一点上我和你有不同看法。
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He is absorbed in his work on bacteria．他凝神进行他关于细菌的工作。
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She began to give him her views on the costumes．她开始给他讲她关于服装的看法。
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