These prepositions have so many uses. Undersand IN, ON, and AT by understanding what they mean. When you start with meaning, the uses make sense.
IN ON AT - Prepositions of Time and Place: WHAT they mean - WHY we use them
IN ON AT - Prepositions of Time and Place: WHAT they mean - WHY we use them
IN ON AT - Prepositions of Time and Place: WHAT they mean - WHY we use them
IN ON AT - Prepositions of Time and Place: WHAT they mean - WHY we use them
IN ON AT - Prepositions of Time and Place: WHAT they mean - WHY we use them
IN ON AT - Prepositions of Time and Place: WHAT they mean - WHY we use them