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1·Sheila had an ulterior motive for trying to help Stan.

希拉设法帮助斯坦是别有用心。《柯林斯英汉双解大词典》

2·She must have some ulterior motive for being nice to me—what does she really want?

她对我这么好，一定别有用心—她到底想干什么呢？《牛津词典》

3·I have an ulterior motive in offering to help you.

我主动提出要帮助你是有私心的。《牛津词典》

4·Their groundless accusation is made with ulterior motives.

他们的无端攻击是别有用心的。《新英汉大辞典》

5·He has ulterior motives.

他别有用心。

6·I suspect that he has ulterior motives.

我怀疑他别有用心。

7·Relevant report is totally groundless and out of ulterior motives.

有关报道毫无根据，是别有用心的。

8·Good luck. You have already been suspected of ulterior motives.

祝你好运。你已经被怀疑是别有用心的了。

9·If you do good, people will accuse you of selfish ulterior motives.

如果你做好事，人们必定认为会说你是别有用心。

10·People thought he must have an ulterior motive for wanting to help.

人们认为他想提供帮助一定是别有用心。

(1)ulterior motive隐秘不明的动机