?You see, I…I am crazy. I take the newer medications, but I still see things that are not here. I just choose not to acknowledge them. Like a diet of the mind, I choose not to indulge certain appetites. Like my appetite for patterns. Perhaps my appetite to imagine and to dream.

——A Beautiful Mind?

你要明白，我……我是瘋的。我服用最新的藥物，但我仍然看的見那些不存在的東西。我只是選擇了不去理睬他們。就好像一頓心靈快餐，我選擇不去縱容某些食欲。比如說我癥狀的食欲。還有我虛構和想象的食欲。

——《美麗心靈》

一、你知道certain有幾種含義嗎？

adj.

1.確實的，有把握的，毫無疑問的?firmly believing sth; having no doubts

I am certain that by the end of the century we can surpass the goal of quadrupling the GNP.

我相信到本世紀末我們的國民生產總值肯定會超過翻兩番的目標。

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2.必然的，必定的，肯定的，確定的，無疑的?that you can rely on to happen or to be true

He had been there four times to my certain knowledge.

我確定他去過那兒4次。

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3.某一?used to mention a particular thing, person or group without giving any more details about it or them

It is impossibly for heat to be converted into a certain kind of energy without something lost.

一點不損耗就把熱轉換成某種能是不可能的。

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pron.

某些，某幾個used for talking about some members of a group of people or things without giving their names

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二、下面我們來學習一下含有certain的常見短語

for certain

1.肯定地

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三、接下來，做個小測試吧

The show appeals to an audience of a ______ age.
某個年齡層的觀眾對這個節(jié)目感興趣。 ?