On a Surface On tells us that the following noun is located on a surface. Use on when one thing is attatched to or touching somthing.

In an Enclosed Space In tells us the noun is in an enclosed space (surround or closed off on all sides). Basically, when something is inside something.

We use at in many common phrases, especially when we are talking about a place for a specific activity.

'All walks of life means' = people from all layers of the society, rich, poor, with various levels of social position or achievement, as a matter of fact, from everywhere!

If you say that someone talks the talk but does not walk the walk, you mean that they do not act in a way that agrees with the things they say.

This video work you through Basic English and Phrasal Verbs with examples to sustain the various definitions.

This video work you through Basic English and Phrasal Verbs with examples to sustain the various definitions.

This video work you through Basic English an Phrasal Verbs with examples to sustain the various definitions.

We use 'on' to talk about: - Days: on Christmas, on Easter, on Halloween; - Dates: on 2nd May, on our anniversary, on July 1st; - Parts of Specific day: on Tuesday morning, on Saturday night.

We use 'in' to talk about: - Months / Seasons: in April, in (the) summer, in (the) spring; - Years / Decade / Centuries: in 2020, in the 70s, in the 21th century; - Long periods: in the present, in the past, in the future, in the ice (middle) age(s); - Parts of the day: in the morning, in the afternoon, in the evening.