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МатематикаВопрос:
Underline the correct form. 1 They have talked/have been talking about it all morning. 2 He's not here because he has been going/has gone to work. He'll be back at 4 o'clock. 3 The children cleaned/have been cleaning the playground yesterday. 4 She has studied/has been studying all day. 5 I worked/have been working without a break since 8 o'clock. 6 I have been walking/walked to the park last week.
Ответ:
Краткое пояснение: В этих предложениях нужно выбрать правильную форму глагола, которая соответствует времени действия. Используются Present Perfect Continuous (have/has been + -ing) для действий, которые начались в прошлом и продолжаются до сих пор или только что закончились, и Present Perfect (have/has + V3) для завершенных действий в прошлом, имеющих результат в настоящем, или действий, связанных с опытом.
Пошаговое решение:
- 1. 'all morning' указывает на длительность действия, поэтому выбираем have been talking.
- 2. 'He's not here' (он не здесь) — результат действия в настоящем, 'has been going' (ходил) указывает на продолжающееся действие, а 'has gone' (ушел) — на завершенное. Так как он еще не вернулся, выбираем has gone.
- 3. 'yesterday' указывает на завершенное действие в прошлом, поэтому выбираем cleaned.
- 4. 'all day' указывает на длительность действия, поэтому выбираем has been studying.
- 5. 'since 8 o'clock' указывает на начало длительного действия, поэтому выбираем have been working.
- 6. 'last week' указывает на завершенное действие в прошлом, поэтому выбираем walked.
Ответ: 1. have been talking 2. has gone 3. cleaned 4. has been studying 5. have been working 6. walked
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