On time / In time

On time

pontual, na hora exata. Se alguma coisa acontece on time, isto acontece na hora que foi planejada:

• Classes start at 8.00 please be on time.
• The show was very organised it began and finished on time.

O oposto de on time is late : Do not be late. Be on time

In time

Significa chegar/estar a algum lugar em tempo, dentro do tempo programado:

• Please be home in time for lunch.
• I gotta go now. I want to get home in time to see the football match on television.

O oposto de in time é too late : I got home too late to see the football match.

Obs.:

• on the dot, sharply : pontualmente
• just in time : em cima da hora

See you.