Present Active: I am going to the store today.
Past Active: I went to the store yesterday.
Present Passive: The 12:30 bus takes me to the store.
Past Passive: The store was busy when I went yesterday.
Present Active: I am going to the store today.
Past Active: I went to the store yesterday.
Present Passive: The 12:30 bus takes me to the store.
Past Passive: The store was busy when I went yesterday.
Your present active and past active examples are good.
Present passive: “I am being taken to the store by the 12:30 bus.”
Sentences where the main verb is a form of “to be” (e.g., is, am, are, was, were, be, being, been, etc.) are neither active nor passive. So “the store was busy” does not fall into either category.
Past passive: “I was taken to the store by the 12:30 bus.”