Grammarly
Grammarly Blog: Prepositions of Time and Place
An explanation with examples of prepositions that describe time and place.
English Club
English Club: Learn English: Grammar: Prepositions of Time: At, In, On
Information and examples of using the prepositions "at," "in," and "on" to indicate time.
Khan Academy
Khan Academy: Prepositions About Time and Space
Identify and use prepositions that show relationships in time and space.
Other
Woodward English: At on in Prepositions of Time
Complete each sentence by choosing the correct preposition in this twenty-question quiz.
Capital Community College Foundation
Guide to Grammar and Writing: Prepositions Locators in Time and Place
This site is prepared by Professor Charles Darling of Capital Community College and breaks down prepositions by time, place, and movement.
PBS
Pbs Learning Media: How to Use Prepositions
Prepositions indicate locations, whether physical or in time. Around, in, outside, before, during. Prepositions help us know the when and where! [0:48]
Get It Write
Get It Write: Ending Sentences With Prepositions
Read this tutorial to find out about ending sentences with prepositions, how to correct the problem, and times when it seems that sentences end in prepostions, but that really isn't the case. (Hint--when using a phrasal verb.)
Grammarly
Grammarly Blog: Uses of Prepositions
This page explains the uses of prepositions including to show direction, time, location, and spatial relationships. Examples are provided.
University of Victoria (Canada)
Elc Study Zone: Basic Prepositions
This site explains the various uses for "in," "on," and "at" in phrases referring to transportation, time, and communications (TV, radio, etc.). Also links to a practice exercise.
Grammarly
Grammarly Blog: Unnecessary Preposition
This page explains that changes in usage over time makes the use of prepostions in certain instances unnecessary. While they are not technically incorrect, they lead to wordiness and should not be used. Examples are provided.
English Club
English Club: Learn English: Grammar: Preposition
Links to information about prepositions including: What is a preposition, preposition list, a simple rule for prepositions, prepositions of place, and propositions of time.
Study Languages
Study Spanish: Ir a + Infinitive
Good introductory lesson to the use of "ir a" to indicate future events. A list of adverbs that denote future time periods may also prove useful. "Poder", "acabar de", and "volver a" are introduced as other double verb constructions. A...
PBS
Pbs Learning Media: How to Use Prepositional Phrases
Prepositions indicate the location of a thing to another thing across time or space. Prepositional phrases contain a preposition and its object. [0:44]