Estudo ingles

Estudo Inglês
Preposições
Prepositions of Time
In, at, on and no preposition with time words:
Prepositions of time - here's a list of the time words that need 'on', 'in', 'at' and some that don't need any preposition. Be careful - many students of English use 'on' with months (it should be 'in'), or put a prepostion before 'next' when we don't need one. at | * times: at 8pm, at midnight, at 6:30 * holiday periods: at Christmas, at Easter * at night * at the weekend * at lunchtime, at dinnertime, at breakfast time | on | * days: on Monday, on my birthday, on Christmas Day * days + morning / afternoon / evening / night: on Tuesday morning * dates: on the 20th of June | in | * years: in 1992, in 2006 * months: in December, in June * decades: in the sixties, in the 1790s * centuries: in the 19th century * seasons: in winter, in summer * in the morning, in the afternoon, in the evening | no prep | * next week, year, month etc * last night, year etc * this morning, month etc * every day, night, years etc * today, tomorrow, yesterday |

Prepositions of Place
Prepositions of place can be difficult - here's some help about using 'at', 'in' and 'on' when you're talking about where things are.
Basics:
If something is contained inside a box or a wide flat area, we use ‘in’: in the newspaper | in a house | in a cup | in a drawer | in a bottle | in a bag | in bed | in a car | in London | in England | in a book | in a pub | in a field | in the sea | in my stomach | in a river |
If something is on a line or a horizontal or vertical surface, we use ‘on’: on the table | on the wall | on the floor | on the fridge | on my face | on a plate | on the page | on the sofa | on a chair | on a bag | on the river | on a t-shirt | on the ceiling | on a bottle | on a bike | on his foot |
If something is at a point, (it could be a building) we use ‘at’: at the airport | at the door | at the table |