1. Form
1.1. Positive
1.1.1. Examples
1.1.1.1. I have eaten crocodile.
1.1.1.2. She has eaten crocodile
1.1.1.3. I've eaten crocodile
1.1.1.4. He's eaten crocodile
1.1.2. Long
1.1.2.1. Subject + has/have + Past Participle
1.1.3. Short
1.1.3.1. Subject + 's/'ve + Past Participle
1.2. Negative
1.2.1. Examples
1.2.1.1. I have not driven a car
1.2.1.2. I haven't driven a car
1.2.1.3. He hasn't driven a car
1.2.1.4. She has not driven a car
1.2.2. Long
1.2.2.1. Subject + have/has + not + Past Participle
1.2.3. Short
1.2.3.1. Subject + haven't/hasn't + Past Participle
1.3. Question
1.3.1. Examples
1.3.1.1. Have you eaten crocodile?
1.3.1.2. Has she eaten crocodile?
1.3.2. Long
1.3.2.1. Have/has + Subject + Past Participle
2. Usage
2.1. To talk about a past experience in your life. From the moment you were born until now.
3. Pronunciation
3.1. Short forms
3.1.1. I've
3.1.2. He's
3.1.3. She's
3.1.4. It's
3.1.5. You've
3.1.6. They've
3.1.7. We've
3.2. Past Participle Regular verbs /ed/ sound
3.2.1. /d/ sound
3.2.1.1. Last sound before -ed vibrating
3.2.1.1.1. moved
3.2.1.1.2. answered
3.2.2. /t/sound
3.2.2.1. last sound before -ed non vibrating
3.2.2.1.1. worked
3.2.2.1.2. laughed
3.2.3. /id/ sound
3.2.3.1. last sound before -ed a /t/ or /d/ sound
3.2.3.1.1. decided
3.2.3.1.2. waited