Prepositions

Here are all those words, usually little ones, like

which tell us how something is positioned or done in relation to something else. We use them for place, for time and in abstract ideas.

 

place	in his bag behind the tree through the window on your desk
time	before three o' clock in September during the night from Monday to Thursday
abstract	in tune a difference to your studies information about the program a third of the total

Sometimes we can get a whole string of prepositional phrases in the one sentence, separated by commas.