Ingles

Prepositions
A preposition describes a relationship between other words in a sentence. In itself, a word like "in" or "after" is rather meaningless and hard to define in mere words. For instance, when you do try to define a preposition like "in" or "between" or "on," you invariably use your hands to show how something is situated in relationship to something else. Prepositions are nearly alwayscombined with other words in structures called prepositional phrases. Prepositional phrases can be made up of a million different words, but they tend to be built the same: a preposition followed by a determiner and an adjective or two, followed by a pronoun or noun (called the object of the preposition). This whole phrase, in turn, takes on a modifying role, acting as an adjective or an adverb,locating something in time and space, modifying a noun, or telling when or where or under what conditions something happened.
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 forthe 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 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 helpfulprepositions 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).
He held his breath for seven minutes.
She's lived there for seven years.
The British and Irish have been quarreling for seven centuries.
We use since with a specific date or time.
He's worked here since 1970.
She's been sitting in the waiting room since two-thirty.

Prepositions with Nouns,Adjectives, and Verbs.
Prepositions are sometimes so firmly wedded to other words that they have practically become one word. (In fact, in other languages, such as German, they would have become one word.) This occurs in three categories: nouns, adjectives, and verb
| |   |
|  There is and there are |   |   |
| We use There is / There are to say that something exists (or does not exist). Thereal subject usually comes after There is / There are. | | |
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1) | Use "There is" for singular nouns and things you cannot count.
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  | Examples: | | |
  |                There is a river in my town.              | | |
  |                There is a ghost in this room....               | | |
|                There is an apple on thedesk                      | | |
  |                There is ice on the lake.   | | |
  |                There is oil on the pavement. | | |
  |   | | |
2) | Use "There are" for plural nouns; that is to say, we use there are with a plural subject.
  | | |
  | Examples: | | |
  |                There are two parks in my neighbourhood.   | | |
|                There are...