jia1 you3? you mean translate it from mandarin? I know jia1 you2 can translate "cheer ", but jia1 you3? I don't know it clearly,maybe it would be "家有"？ I don't know,sorry.

if you want to know it clearly,you should learn it from Bopomofo.

No,children learnt speech by their parents that likes you learnt speech,they didn't have drill to help their tones. Every charaters not only have one tone,but also has other tones.one charater has different pronunciations in different phrases,and sometimes it has a special tone in special phrases.Also,tones are impacted on local pronunciation. Everywhere have no absolute mandarin, unless the official media. Children would correct their nonstandard tones in school. really difficult to response you.I hope my words can help you a little.

Chinese people always get together in spring festival.They will sit infront in television to watch "spring festival program"from 8pm to 12pm.They will eat dumpings after dumpings.Usually,some families wrap dumpings with coins.and if you eat a dumpings with a cion,that means you will be lucky in next year.After spring eve, people may go to some relations' home then give some gifts.Do you know red envelope? every years, children will get it from adults. In the other way,some people decide to travelling during spring holiday,because there isn't a lot of people to travel in that time. My english is not very average,I hope you can understand my words.