Question

What is the difference between preposition (In) and (at)
Plz explain it briefly ...
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Answer 1

Answer:

Generally speaking at is used to describe an exact location or time.

E.g. I will meet you at the library. = the exact place you will meet.

You can also use at to describe where two lines cross or intersect such as two roads that cross or a corner.

E.g. I will meet you at highway 1. and Corfield St. = where these two roads cross each other.

We can also use in to talk about time and place.

E.g. I will see him in January.

Also remember that some prepositions form part of a phrasal verb structure and don't function on their own and this confuses learners.

E.g. Please drop in when you have time. drop in = please visit.

Answer 2

Explanation:

In refrers to inside and is used with bigger place.

we say in the morning, in the noon, in the evening

For Ex: She lives in Chennai at palavakkam.

At refers to near and is used with place.

we say at night, at 20past 8(8:20), at the kitchen.

For instance: She is studying at XYZ University.

we say at night.