Tento plán je mnohem lepší.

to be

Breakdown of Tento plán je mnohem lepší.

• dobrý: good
• plán: the plan
• tento: this

Questions & Answers about Tento plán je mnohem lepší.

Why is this written as tento here?

Because plán is a masculine singular noun in the nominative case, and Czech demonstratives change form to match the noun.

For example:

• tento plán = this plan
• tato kniha = this book
• toto město = this town/city

So tento is the correct form for a masculine singular noun like plán.

Could I also say Ten plán je mnohem lepší?

Yes, but the nuance is a little different.

Tento is the clearest, most explicit way to say this.
Ten often means that, but in everyday Czech it can also refer to something already known from context, so it may sound less precise.

For a learner, tento plán is the safest match for this plan.

What is je?

Je is the 3rd person singular present form of být, meaning to be.

So:

• plán je lepší = the plan is better / this plan is better

In standard Czech, you normally include je in a sentence like this.

Why is better translated as lepší and not something based on dobrý?