她以前在中国教过英语。

She taught English in China before.

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山姆：艾丽斯现正在攻读英国文学的硕士课程。她以前在中国教过英语。

Sam: Alice is now on the M. A. course of English literature. She taught English in China before.

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胡先生在汲沦谷做生意已经两年多了，他以前在中国也开过饭馆。 翁。

Mr Hu has run the Kedron business for the past two years and had previously operated restaurants in China.

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