English grammar online - Preposition 'at'

Hi everyone Thanks for stopping by LiamLusk.com/myblog and checking out my new video series “Making Grammar Easier”. As I said in my last video the most common prepositions in the English language are ‘in,on,at’ and the reason I wanted to talk about them was because when I am teaching English grammar or just doing English language exercises students are always asking me to explain them. I am going to explain these prepositions in three videos and the second video will be about the preposition of time –‘at’. As I have already said in this video I will talk about the preposition of time ‘at’.