Hearing of Uncle Zhang's heart attack, Doctor Tang was extremely worried and rushed to his bedside immediately.

听说张大爷心脏病犯了，唐大夫心急如火立即赶去抢救。

《新英汉大辞典》

I'm extremely worried about you.

我非常为你担心。

youdao

My fiance is extremely worried about the trip and thinks we'll come back with swine flu.

我的未婚夫是非常担心，并认为此行我们得猪流感。

youdao

His wife Sarah, who is due to give birth in two weeks, said she was extremely worried.

BBC: Wife of missing Arbroath marine urges him to come home

"These heartless criminals are leaving people extremely worried and in a great deal of debt, " Mr Bettison said.

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"When I saw their team line-up I was extremely worried, " said the Frenchman.

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