You were smart and adorable and all this time I assumed you were dumb and adorable.

你很聪明，而且很可爱,这么久了我竟然一直以为你可爱但只是不会说话呢“

哈佛公开课 - 计算机科学课程节选

I thought university was going to be a lot easier than it is.

我一直以为大学的学习会比较容易。

I think 实战 - SpeakingMax英语口语达人

The next day in class, I used that and I said to the students, "You know, the last thing in the world that I want you to think is that I experience a constant high or that you, by the end of the semester or the year-- it was a year course, you-- by the end of the year-- " will experience a constant high."

第二天上课时，我讲了这件事并对学生说，“我最不希望你们以为,我总是保持快乐，或者你们，在期未或学年未-,那门课程要讲一年，你们到学年未时-,会一直保持快乐“

哈佛公开课 - 幸福课课程节选

I used to think penguins could fly.

我曾经一直以为企鹅会飞。

I used to实战 - SpeakingMax英语口语达人