demain in English:

We're closed tomorrow.

Never put off till tomorrow what you can do today.

It makes no difference whether you go today or tomorrow.

Mathematics is the part of science you could continue to do if you woke up tomorrow and discovered the universe was gone.

Tomorrow we go to school to sign up for the classes we want to take.

How about going for a drive to Lake Yamanaka with us tomorrow?

Tomorrow I’ll go out with friends after having lunch.

Since Tom is leaving for Boston tomorrow, today is our last chance to give this to him.

Our departure tomorrow is contingent on fair weather.

We must register for the courses that we're going to take by tomorrow.

Tomorrow I'll go to his house to pick him up.

We'll climb the mountain if it is fine tomorrow.

He comes home from his trip to Europe tomorrow.

You're pretty calm cool and collected for somebody who has a major presentation tomorrow.

Come again tomorrow afternoon, when I will have more time to talk with you.