We can go park tomorrow.

Meaning: This means the speaker and one or more other people are able to move from one place to another to a place with grass, trees, and often a playground the day after today.

Choice of Words: We means the speaker and one or more other people. Can means to be able to do something. Go means to move from one place to another. Park is a place with grass, trees, and often a playground. Tomorrow means the day after today.