Read the sentences. Then look at the calendar and say the sentences. Then use: two weeks ago, last Sunday, yesterday, a week ago, last Tuesday, three days ago. 2 Mary was at school on the twentieth of March.

Okay, let's do the same for the sentence 'Mary was at school on the twentieth of March'. The 20th of March is a Thursday according to the calendar. Let's apply each time phrase. * **two weeks ago:** Two weeks before the 20th of March would be the 6th of March. The sentence becomes 'Mary was at school two weeks ago'. * **last Sunday:** Last Sunday before the 20th of March is the 16th of March. The sentence becomes 'Mary was at school last Sunday'. * **yesterday:** The day before the 20th is the 19th of March. The sentence becomes 'Mary was at school yesterday'. * **a week ago:** A week before the 20th would be the 13th of March. The sentence becomes 'Mary was at school a week ago'. * **last Tuesday:** The last Tuesday before the 20th was the 18th of March. The sentence becomes 'Mary was at school last Tuesday'. * **three days ago:** Three days before Thursday the 20th would be Monday the 17th. The sentence becomes 'Mary was at school three days ago'. **Answers:** * Mary was at school two weeks ago. * Mary was at school last Sunday. * Mary was at school yesterday. * Mary was at school a week ago. * Mary was at school last Tuesday. * Mary was at school three days ago. **Explanation for Students (на русском):** Мы работаем с датами. 20-е марта - это четверг. "Две недели назад" - это 6 марта. "В прошлое воскресенье" - это 16 марта. "Вчера" - это 19 марта. "Неделю назад" - это 13 марта. "В прошлый вторник" - это 18 марта. "Три дня назад" - это 17 марта. Для каждого временного промежутка мы строим новое предложение.