What is the different of past tense and past participle?

Answer 1

For example:

The past of eat is ate and the past participle is eaten - eat / ate / eaten.

eat is used to make a present simple sentences - I eat breakfast everyday.

ate is used to make past simple sentences - I atebreakfast yesterday.

The past participle is used to make:

present perfect - I have eaten breakfast everyday this week.

past perfect - I had eaten breakfast early in the morning.

passive sentences - Breakfast is eaten before lunch.

Answer 2

The past tense is used to describe an action or event that occurred in the past. For regular verbs, the past tense typically ends in -ed (e.g. walked, talked). The past participle is a form of the verb used in forming the present perfect, past perfect, and passive voice. It often ends in -ed, -en, or -d (e.g. walked, eaten, done).