Past simple has only one verb and that is in past tense. eg I arrived at the station. - arrived is past verb.
Past perfect has two verbs one is had - the past of have, and the other is a past participle. eg The train had left. - left is the past participle of leave.
Past simple and past perfect are often used together. The past perfect verb shows an action that happened in the past before another action (past simple) that happened in the past eg
The train had left when I arrived at the station.
They're the same thing - the 'simple' is usually just missed out.Other forms of the past tense are:Past PerfectPast ContinuousPast Perfect Continuous
The present perfect tense is used to show that an action happened at an unspecified time before now, while the simple past tense is used to show that an action happened at a specific time in the past.
Past simple has only one verb and that is in past tense. eg I arrived at the station. - arrived is past verb.Past perfect has two verbs one is had - the past of have, and the other is a past participle. eg The train had left. - left is the past participle of leave.Past simple and past perfect are often used together. The past perfect verb shows an action that happened in the past before another action (past simple) that happened in the past egThe train had left when I arrived at the station.
Past tense
Past simple and simple past are both the same thing. They are both the past tense of a verb.
"i had" is used in past tense and "i have had" is used in past perfect perspective. That is the only difference. no need to get confused.
Present perfect tense.
Wrote is the simple past; had written is the past perfect.
Usually we use past simple to talk about something that happened at a definite time in the past. The exact time in the past may or may not be clear.I met him in 1990.I met him when I lived in Amsterdam.Whereas Past perfect is usually used to talk about one thing in the past that happened before another thing in the past (usually expressed by past simple)The train had left the station when I arrived.When the play had finished the audience cheeredloudly.
The present simple is used for habitual actions or general truths in the present. The past simple is used for actions that were completed in the past. The present participle is used for actions happening at the same time as the main verb, while the past participle is used for completed actions or to form the perfect tenses.
"Went" is the simple past tense of "go". The past participle is "gone", so the past perfect is "had gone".
It is the same difference as exists in English between perfect and simple verbs. A perfect verb implies past action as well as continuance in the given tense whereas a simple verb only discusses action in a given tense. For example, if I say "I have walked the dog", it means that I walked the dog prior to my current walking of the dog and that the past walking and present walking was continuous. If I say "I walk the dog", it would seem to be something that is generally something that I do, but is not a continuous action.