Present Perfect: identificación y corrección de oraciones

Enunciado: I hasn't gone to the doctor since 2022.

1. El sujeto es I, por lo que el auxiliar debe ser have, no has.
2. La forma negativa correcta es have not o haven't.

Enunciado: My brother has measured his temperature with a digital thermometer.

1. Sujeto My brother (tercera persona singular) → auxiliar has.
2. Measured es el participio pasado de measure.

Enunciado: I have not gotten my vaccine. I need to go to the hospital.

1. Sujeto I → auxiliar have.
2. Gotten es el participio pasado de get en inglés americano.

Enunciado: The cardiologist has checked my heartbeat and I'm in a great condition.

1. Sujeto The cardiologist → auxiliar has; checked es participio pasado.
2. La segunda parte usa el presente simple I'm, lo cual es válido como oración independiente.

Enunciado: Martha and Luis has made a donation to the blood bank.

1. El sujeto compuesto Martha and Luis equivale a they → auxiliar have.
2. Has es incorrecto con sujeto plural.

Enunciado: Ligia and Lourdes has taken new medication with good health results.

1. El sujeto compuesto Ligia and Lourdes equivale a they → auxiliar have.
2. Has es incorrecto con sujeto plural.

Enunciado: Has he taken his blood pressure?

1. En preguntas: auxiliar + sujeto + participio pasado.
2. Sujeto he → auxiliar has; taken es participio pasado de take.

Enunciado: She have made the experiment.

1. Sujeto She (tercera persona singular) → auxiliar has.
2. Have es incorrecto con she.

Enunciado: I have verified the patient's oxygen levels.

1. Sujeto I → auxiliar have.
2. Verified es el participio pasado de verify.

Enunciado: How has you mixed the injection?

1. Sujeto you → auxiliar have, no has.
2. La pregunta correcta es How have you mixed the injection?

Respuesta: I haven't gone to the doctor since 2022.

Respuesta: Martha and Luis have made a donation to the blood bank.

Respuesta: Ligia and Lourdes have taken new medication with good health results.

Respuesta: She has made the experiment.

Diálogo modelo

When you are looking for information to work on your project, you can use the following kind of questions:

A: Have you ever used a blood pressure cuff? B: Yes, I have used it since 2023, when I had a heart condition. A: Have you ever used a stethoscope? B: No, I have never used that instrument.

Respuesta orientativa: Este diálogo muestra el uso del presente perfecto con ever y never para preguntar y responder sobre experiencias de vida relacionadas con la salud.