Base Form: involve
* Example: The project involves a lot of teamwork.
Past Tense: involved
* Example: She involved her friends in the planning.
Past Participle: involved
* Example: I am involved in several community projects.
Present Participle (Gerund): involving
* Example: Involving everyone in the decision-making process is crucial.
Present Participle (Adjective): involving
* Example: This is an involving story.
Let me know if you have a specific sentence you'd like help with, and I can tell you which form of "involve" is correct.