My heart sank because I thought he was going to dump me for another girl.

我的心情沮丧，因为我认为他要把我甩了，去追求另一个姑娘。

《柯林斯英汉双解大词典》

I took the bracelet off, because I thought she might have forgotten me.

我把手镯取了下来，因为我以为她可能把我忘了。

youdao

The first idea I got was to use fire, because I thought lions were scared of fire.

我想到的第一个主意是用火，因为我认为狮子害怕火。

youdao

SLUMDOG MILLIONAIRE: "I went on the show because I thought she would be watching.

VOA: special.2009.02.20

Because I thought the payoffs - the two different payoffs that I could have gotten-- were highest if I chose Alpha.

因为我发现,如果我选α的话,我得到的两种结果是最优的

耶鲁公开课 - 博弈论课程节选

Because I thought about it a lot Welles chose that word I guess obviously that frame was a happy picture ? In the word? Why that word?

因为我对这个问题想了很多,为什么威尔斯要选择这个词,我觉得很明显，这个镜头是幸福的,词内涵的深意？还是为什么选这个词？

麻省理工公开课 - 电影哲学课程节选

It is a fact, because I thought 30 percent potentially was too high of a ceiling.

CNN: Part 1 of CNN Democratic presidential debate

But I never would have acted on it because I thought there was no possible way.

WSJ: A Look at the Brothers

"I started to pull back because I thought he wasn't happy with me, " she says.

WSJ: How to Negotiate for More Space in Your Relationship