⇒⇒ Prepositions
a. Nelson Mandela married Winnie Madikizela at the age of 39.
b. He was released from prison on February 11, 1990.
c. He became the first black president of South Africa in 1994.
d. In 1999 he declined a second presidential term.
Explicação:
→→ Prepositions IN - ON - AT
in - geral
on - more specific - mais específico
at - very specific - muito específico
→→ ''in'' para se referir aos períodos maiores e menos específicos, como uma parte do dia, meses, estações do ano, anos, séculos
in May
in Summer
in 1990
in the morning
in the Spring
in the past
→→ ''on'' para dias da semana e datas
on 6th March
on the weekend
on Sunday morning
Monday afternoon
on January 10th, 2010
on New Year’s Eve
→→ ''at'' para tempo específico (hora), lugar, address - endereço completo
at one clock
at half past nine.
at the Mall
at Easter
at the same time
at 3245 Paulista Ave.
at 97 Ocean Dr.
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