| I, you |
do not + verb don’t + verb |
I do not walk / catch / fly. → I don’t walk / catch / fly. You do not walk / catch / fly. → You don’t walk / catch / fly. |
| he, she, it |
does not + verb doesn’t + verb |
He does not walk / catch / fly. → He doesn’t walk / catch / fly. She does not walk / catch / fly. → She doesn’t walk / catch / fly. It does not walk / catch / fly. → It doesn’t walk / catch / fly. |
| we, you, they |
do not + verb don’t + verb |
We do not walk / catch / fly. → We don’t walk / catch / fly. You do not walk / catch / fly. → You don’t walk / catch / fly. They do not walk / catch / fly. → They don’t walk / catch / fly. |
* The verb after “do not / does not / doesn’t / don’t” NEVER adds an “-s/-es/-ies” at the end.