BCTABÚTe at/on/in.I got up• 1.Where were you28 February?• 2.8 o'clock this morning.• 3.I like getting up earlythemorning.4. My sister got married May. .5. Diana and I first met1978.6. Did you go out Friday?• 7.Did you go out Friday evening?• 8. Do often outtheevening?​

Where were you on 28 february?

I got up at 8 o' clock this morning

I like getting up early in the morning

My sister got married in May.

Diane and I first met in 1991

Did you go out on Tuesday?

Did you go out on Tuesday evening?

Let's meet at 7:30 tomorrow evening

Prepositions

in - общие

интернет - more specific - более конкретные

at - very specific - очень специфический

"in" для обозначения более длительных периодов и менее конкретными, как, например, части суток, месяцев, сезонов, лет, веков

in May

in Summer

in 1990

in the morning

"интернет" для дня недели и даты

on the weekend

on Sunday morning

on January 10th, 2010

"at" на определенное время (время) и место

at one clock

at night

at Christmas