time
at 6AM, at 8:15
place
at home, at school, at work
time
in the eveninjg
place
in England, in Moscow
time
on the weekend, on my birthday
place
on Lenin street
means of transport
by train, by airplane
for lunch, for a break, for an hour
Prepositions are short words (on, in, to) that usually stand in front of nouns (sometimes also in front of gerund verbs).Even advanced learners of English find prepositions difficult, as a 1:1 translation is usually not possible. One preposition in your native language might have several translations depending on the situation.