I was only worried about it when I saw her with Shana.我唯一擔心的就是看到她和莎娜一起的時候

worry about:擔心； 煩惱

I don't think you need to worry about this.

我認為你不必為這事擔心。

You should have seen those chicks fighting over me at the bar.你真應該看看那幾個在酒吧為我打架的女人

fight over:爭奪； 為 ... 爭吵

The twin sisters always fight over toys.

這對雙胞胎姐妹經常因為玩具而爭吵。

The two boys fought over a game and then made friends again.

兩個男孩因一場比賽而斗毆，后又重歸于好。

It's the only thing I can think of that might explain how upset she's been.她最近如此沮喪這是我能想到的唯一解釋了

think of:想到

He would never think of letting his daughter marry a fellow like you.

他決不會想到讓女兒嫁給像你這樣的家伙。

相關短語:

think much of重視

I don't think much of his ideas.

我認為他的一些看法并不怎么樣。

think nothing of 不把 ... 放在心里

She thinks nothing of walking ten miles.

她把步行十英里不當一回事。