on

• Preposição que indica posição sobre uma superfície, contato, suporte, direção/tema, tempo determinado (dias/datas), modo/meio e também dependência ou sustento.

The preposition 'on' indicates position on a surface, time (days, dates), means of transport, means of communication, direction, reason, topic, membership of a group, source of livelihood and other relations.

1. Position on a surfaceA1formal

   Indicates the position of something touching or covering the surface of another thing.

   sobre

   • a picture on a wall
   • Put it down on the table
   • There's a mark on your skirt

2. Time: days and datesA1formal

   Used with specific days of the week, dates, holidays and special days.

   em, no, na (dias e datas)

   • He came on Sunday
   • on May the first
   • on your birthday

3. Means of transportA2formal

   Indicates the vehicle or kind of transport by which someone travels.

   meio de transporte

   • He was on the plane from New York
   • to travel on the bus
   • I came on my bike

4. Means of communication or mediaA2formalIT

   Indicates the device, platform or medium through which information is received or communication takes place.

   meio de comunicação ou mídia

   • The information is available on the internet
   • We spoke on the phone
   • What's on TV?

5. Direction or locationA2formal

   Indicates a side, a direction or closeness to a particular place.

   direção, lado ou localização

   • on the left/right
   • a town on the coast
   • a house on the Thames

6. Basis or reasonB1formal

   Indicates the basis, reason or source for an action or a statement.

   com base em, devido a

   • a story based on fact
   • On their advice I applied for the job