Grammar topic one

Prepositions of Time: at, on, and in
We use at to designate specific times.
_The train is due at 12:15 p.m.
We use on to designate days and dates.
_My brother is coming on Monday.
_We're having a party on the Fourth of July.
We use in for nonspecific times during a day, a month, a season, or a year.
_She likes to jog in the morning.
_It's too cold in winter to run outside.
_He started the job in 1971.
_He's going to quit in August.
Prepositions of Place: at, on, and in
We use at for specific addresses.
_Grammar English lives at 55 Boretz Road in Durham.
We use on to designate names of streets, avenues, etc.
_Her house is on Boretz Road.
And we use in for the names of land-areas (towns, counties, states, countries, and continents).
_She lives in Durham.
_Durham is in Windham County.
_Windham County is in Connecticut.
Prepositions of Location: in, at, and on and No Preposition

IN
(the) bed* the bedroom the car
(the) class* the library* school* AT class* home the library* the office school* work
ON
the bed* the ceiling the floor the horse the plane the train
NO PREPOSITION downstairs downtown inside outside upstairs uptown

* You may sometimes use different prepositions for these locations.

Prepositions of Movement: to and No Preposition
We use to in order to express movement toward a place.
_They were driving to work together.
_She's going to the dentist's office this morning.
Toward and towards are also helpful prepositions to express movement. These are simply variant spellings of the same word; use whichever sounds better to you.
_We're moving toward the light.
_This is a big step towards the project's completion.
With the words home, downtown, uptown, inside, outside, downstairs, upstairs, we use no preposition.
_Grandma went upstairs
_Grandpa went home.
_They both went outside.
Prepositions of Time: for and since
We use for when we measure time (seconds, minutes, hours, days, months, years).