"He drinks coffee at 6:15 in the morning."
I would love it if you told me what the words definition was, rather than just the pinyin writing/listening.
If you aren't sure, you should be able to hover over the individual words (or tap on them on mobile devices) to view the definition.
Do you mean the etymology of each character? Thats the only thing missing. The definitions can be accessed by clicking on the words or going back to previous lessons where the definitions were taught
Should probably suggest this answer if it isn't accepted yet. It isn't common in all cultures, but it is correct.
You used the wrong pronoun (他 vs 她) but apart from that the sentence seems correct.
tried with 早上 and 上午 and both were given correct. What is then the difference between these two? And what does it mean each of its characters?
早 by itself as an adjective means 'early'; as a noun means 'morning'
早上 is a noun meaning 'morning'
上 means, among other things, 'up' and 'previous'; 午 is 'noon'; 上午 means 'before noon'
Commonly, 早上 would be used for times earlier in the morning than 上午, which would be used for times closer to noon (like after 10am).
When would the 'morning' be before and when would it be after the time?
Units in Chinese always go from biggest to smallest. "Morning" always goes before the hour and minutes.