"Ele olha para você."
Tradução:He looks at you.
at = a, para// for = por, para,// on = em cima/// Use AT -- 1) para falar as horas at 6:30 (às 6h30) . 2) com pontos de tempo do dia at midnight (à meia-noite) at noon (ao meio-dia) at dawn (de madrugada, ao amanhecer) at sunset (ao pôr do sol) . 3) com feriados at Easter (na páscoa) at Christmas (no Natal) Use ON 1) com dias da semana e dias específicos on 29th July (em 29 de julho) on Monday (na segunda-feira) on Sunday (no domingo) . 2) com weekend (fim de semana) What do you usually do on weekends? (O que você costuma fazer nos finais de semana?)
O at para pontos especificos ( at the door, at the corner, at the bus stop). e o ON para superficies ( on the floor, on the wall).
use for a. Used to indicate the recipient or beneficiary of an action: prepared lunch for us. b. On behalf of: spoke for all the members. c. In favor of: Were they for or against the proposal? d. In place of: a substitute for eggs. 4. a. Used to indicate equivalence or equality: paid ten dollars for a ticket; repeated the conversation word for word. b. Used to indicate correlation or correspondence: took two steps back for every step forward. 5. a. Used to indicate amount, extent, or duration: a bill for five dollars; walked for miles; stood in line for an hour. b. Used to indicate a specific time: had an appointment for two o'clock. c. Used to indicate a number of attempts: shot three for four from the foul line.