Preposições de Tempo

Preposições de Tempo: at, in, on

Usamos:

  • at para tempo PRECISO
  • in para MESES, ANOS, SÉCULOS e PERíODOS LONGOS
  • on para DIAS e DATAS

at

in

on

Tempo Preciso

Meses, Anos, Séculos e Períodos Longos

Dias e Datas

at 5 o'clock

in September

on Saturday

at 7.30am

in summer

on Mondays

at noon

in the summer

on May 13th

at dinnertime

in 1980

on 25 Dec. 2010

at bedtime

in the 1980s

on Christmas Day

at sunrise

in the next century

on Independence Day

at sunset

in the Ice Age

on my birthday

at the moment

in the past/future

on New Year's Eve

Look at these examples:

  • I wake up at 7 o’clock.
  • My dad goes home at lunchtime.
  • She travels in June.
  • Do you work on Sundays?
  • My birthday is on February 27th.
  • Will you be here on Christmas Day?

As expressões abaixo sempre são usadas com at:


Expressão

Exemplos

at night

She comes home at night.

at the weekend

We always go to the beach at the weekend.

at Christmas/Easter

I stay with my family at Christmas.

at the same time

We did our homework at the same time.

at present

He's not here at present.

ATENÇÃO!


in

on

in the morning

on Thursday morning

in the mornings

on Wednesday mornings

in the afternoon(s)

on Sunday afternoons

in the evening(s)

on Monday evening

Não usamos at, in, on quando houver last, next, every, this:

  • I went to Salvador last December. (não in last December)
  • They’re taking the test next Tuesday. (não on next Tuesday)
  • We go home every Easter. (não at every Easter)
  • He'll see the doctor this afternoon. (não in this afternoon)




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