Como habíamos visto en la lección Nº 73, la fórmula para escribir el Tiempo Presente Perfecto, se confecciona de esta manera:

Oraciones afirmativas

1. I have visited us many times
2. You have finished that exercise
3. He has been in Chicago several times
4. She has seen that museum
5. It has finished its dinner
6. We have built the bridge 
7. You have broke the dish
8. They have written the letter to their friends

Oraciones negativas

1. I have not (haven't) visited us many times
2. You have not (haven't) finished that exercise
3. He has not (hasn't) been in Chicago several times
4. She has not (hasn't) seen that museum
5. It has not (hasn't) finished its dinner
6. We have not (haven't) built the bridge 
7. You have not (haven't) broke the dish
8. They have not (haven't) written the letter to their friends

Oraciones interrogativas y respuestas cortas

1. Have I visited us many times?  Yes, I have / No, I haven't
2. Have you finished that exercise?  Yes, you have / No, you haven't
3. Has he been in chicago several times?  Yes, he has / No, she hasn't
4. Has she seen that museum?  Yes, she has / No, she hasn't
5. Has it finished its dinner?  Yes, it has / No, it hasn't
6. Have we built the bridge?  Yes, we have / No, we haven't
7. Have you broke the dish?  Yes, you have / No, you haven't
8. Have they written the letter to their friends?  Yes, they have / No, they haven't