Use of to

1. Destination / direction

A I am going to Australia at the end of June.

B we are going to a restaurant

c I usually take the bus to work.

2. Time/ Time between two points

It’s a quarter to 1.

It’s 5 minutes to 8.

Time between two points

The supermarket is open from 9 to 11 pm.

The restaurant is open from Monday to Friday.

3. Comparing two things / preference

I prefer sleeping to working.

I prefer chocolate ice cream to vanilla ice cream.

Do you prefer tea to coffee?

4. Limit/endpoint

She drove to the park.

You have 30 minutes to complete the test.

The store is open from  9 am to 7 pm.

Now you have one minute

Use of for

1. Duration/period of time

I have been waiting for 20 minutes already. Where are you?

2. Helping someone

I can do this for you.

Let me explain this concept for you.

3. Favour

Can you please do something for me?

4. Function/use

For plus ing

The camera is used for taking pictures underwater.

Reason  – to plus v1

I started going to bed at 10  to get more sleep.

Purpose – for plus noun

I started to bed at 10 for my health.