have just gone to school. Did you find your keys yesterday? - Yes, I did. Has Agata written a letter to Santa Claus?

Present Perfect and Past Simple Tenses:

Пояснение: The first three sentences are in the present perfect tense, which is used to describe actions or states that started in the past but have a connection to the present. The present perfect tense is formed by using the auxiliary verb "to have" (in the present tense) followed by the past participle of the main verb. The fourth sentence is in the simple past tense, which is used to describe completed actions or states in the past. The fifth sentence is a negative sentence in the present perfect tense, showing the duration of not seeing Olivia for more than three months. The sixth sentence is in the present perfect tense and indicates that Mary started living in Moscow in 2011 and continues to live there. The seventh sentence is an interrogative sentence in the present perfect tense, asking about someone"s experience of going to London. The last sentence is in the simple past tense, explaining the reason for not going to Moscow last year.

Дополнительный материал:
Просто пошел в школу.
Advise: It"s important to understand the difference between the present perfect and past simple tenses. The present perfect tense is used when there is a connection between the past and the present, while the past simple tense is used for actions completely finished in the past. Pay attention to the auxiliary verb "to have" and the past participle when forming the present perfect tense.
Практика: Transform the following sentences into either the present perfect tense or the past simple tense, based on the provided context:
- I (visit) Paris last year. (Use the past simple tense)
- She (study) English for five years. (Use the present perfect tense)
- They (not finish) their homework yet. (Use the present perfect tense)
- Peter (buy) a new car yesterday. (Use the past simple tense)