1704922927
We must “shoot the arrow at the target”．我们必须“有的放矢”。
1704922928
1704922929
He mocked at her pronunciation．他讥笑她的发音。
1704922930
1704922931
I don’t know what you’re driving at．我不知道你这话是什么意思。
1704922932
1704922933
为了，对于（表示引起某种情绪的原因）：
1704922934
1704922935
He looked surprised at seeing us．看到我们他显得很惊讶。
1704922936
1704922937
He was very angry at losing it．丢失了它他很生气。
1704922938
1704922939
She was delighted at the chance．有这机会她很高兴。
1704922940
1704922941
She was disappointed at his refusal．他拒绝了，她很失望。
1704922942
1704922943
At this news they were highly indignant．听了这消息他们非常愤怒。
1704922944
1704922945
She was not happy at what he said．对他说的话她感到不高兴。
1704922946
1704922947
We all rejoiced at the news of your success．听到你成功的消息我们都很高兴。
1704922948
1704922949
在……情况下（表示一个动作的起因）：
1704922950
1704922951
He was writing at the request of Mr. Liu．他是应刘先生的请求写信的。
1704922952
1704922953
At Tom’s suggestion, she wrote to her mother to come at once．在汤姆的建议下她写信让她妈妈马上来。
1704922954
1704922955
At the mere thought of it my heart began to beat fiercely．只要想到这，我的心就开始猛烈地跳动。
1704922956
1704922957
All theatres were open again at the command of the government．在政府命令下，所有剧场又重新开门了。
1704922958
1704922959
He opened his eyes at the mention of Robin Hill．在提到罗宾·希尔时他睁开了眼睛。
1704922960
1704922961
在某方面：
1704922962
1704922963
She was quite clever at drawing．她擅长画铅（钢）笔画。
1704922964
1704922965
I was never any good at trigonometry．我的三角学一直学得不好。
1704922966
1704922967
She wasn’t much at letter-writing．她不太善于写信。
1704922968
1704922969
He’s a genius at chemistry．他在化学方面是天才。
1704922970
1704922971
He is an expert at repairing clocks．他是修钟专家。
1704922972
1704922973
She was working hard at two new songs．她在用心写两首新歌。
1704922974
1704922975
引起短语作表语，表示状态或动作：
1704922976
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