I have to wake up at 5 am from tomorrow.

He has to work hard for at least 10 years.

We will have to learn to do business properly.

I had to learn English at that time but I was busy with other things.

You have to drink four litres water every day.

Ravi will have to face the interview some or the other day.

Rahul is to come to my home today. /
Rahul has to come to my home today.

Amit had to go to his house.

Am I not to go? /
Have I not to go?

I have to call him every day.

I will have to decide today itself.

I don’t have to go there. /
I have not to go there. /
I am not to go there.

I have to call him every day.

What have you to do? /
What do you have to do? /
What are you to do?

I am to meet you. /
I am supposed to meet you. /
I have to meet you.

I was to go to school./
I had to go to school.

I had to go to school.

They will have to talk to you.

He will have to sit with me.

Now, this has to be done. /
Now, this is to be done.