Simple past Vs Present Perfect Tense

The simple past tense is used to describe actions that were completed in the past. Example: 'I walked to the store.'

The present perfect tense is used to describe actions that occurred at an unspecified time in the past or that started in the past and continue to the present. Example: 'I have walked to the store.'

We use the simple past tense for actions that happened at a specific time in the past. Example: 'She visited her grandmother last week.'

We use the present perfect tense for actions that have relevance to the present or for experiences. Example: 'I have seen that movie before.'

For regular verbs, add -ed to the base form. Example: 'play' becomes 'played.'

The present perfect tense is formed using 'have' or 'has' + past participle. Example: 'I have eaten.'

The past participle of 'go' is 'gone.'

The past participle of 'see' is 'seen.'

'I lost my wallet' indicates a completed action in the past, while 'I have lost my wallet' indicates a past action with relevance to the present.

The auxiliary verb 'have' is used with 'I' and 'you' in the present perfect tense.