Explanation:

Past Simple, Past Continuous, and Past Perfect are three different tenses used to talk about events and actions that happened in the past. Each tense has a specific purpose and is used to convey different nuances of time and sequence.

Past Simple:

Past Simple is used to talk about completed actions or events that happened in the past and are not ongoing. It's formed by adding '-ed' to regular verbs or using irregular forms for irregular verbs. It often refers to a specific point in the past.

Example: She visited her grandmother last weekend. (Ella visitó a su abuela el fin de semana pasado.)

Past Continuous:

Past Continuous is used to describe actions that were ongoing or in progress at a specific time in the past. It's formed with the past tense of "to be" (was/were) and the base form of the main verb + '-ing'.

Example: They were playing soccer when it started raining. (Ellos estaban jugando al fútbol cuando empezó a llover.)

Past Perfect:

Past Perfect is used to show that one action in the past happened before another action also in the past. It's formed by using "had" + the past participle of the main verb.

Example: By the time I arrived, they had already eaten dinner. (Para cuando llegué, ellos ya habían cenado.)

Table:

Tense Structure Example
Past Simple Subject + past verb (+ object) She visited her grandmother last weekend.
Past Continuous Subject + was/were + base verb + -ing They were playing soccer when it started raining.
Past Perfect Subject + had + past participle They had already eaten dinner by the time I arrived.

Structure:

Examples:

  1. Past Simple: He watched a movie yesterday. (Él vio una película ayer.)
  2. Past Continuous: She was reading a book when the phone rang. (Ella estaba leyendo un libro cuando sonó el teléfono.)
  3. Past Perfect: They couldn't find the keys because someone had taken them. (No pudieron encontrar las llaves porque alguien las había tomado.)
  4. Past Simple: We ate at that restaurant last week. (Comimos en ese restaurante la semana pasada.)
  5. Past Continuous: While they were studying, it started snowing outside. (Mientras estaban estudiando, empezó a nevar afuera.)
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