Mastering Prepositions of Time

Khan Academy

This engaging grammar lesson transforms students into "Time Wizards" by exploring English prepositions of time. The narrator explains how words like "after," "before," "at," "by," "for," "in," "on," "since," and "until" function to establish temporal relationships in sentences. The video utilizes a humorous and informal tone, featuring doodles of wizards, vampires, and bat-clocks to make abstract grammatical rules memorable and accessible.