Yangyang explains English for Chinese speakers, but this lesson can also be useful the other way round. The English dialogue, shown at the beginning, includes:
Ross: "You know you probably didn't know this but back in high school I had a... ugh, major crush on you." Rachel (after a pause): "... I knew." Ross: "You did? oh wow ... I always figured you thought I was Monica's geeky brother." Rachel: "... I did."
This video (see at YouTube) is of advanced level difficulty. It has subtitles in English.