Чтобы правильно использовать слова "Since" и "For", нужно помнить о следующих правилах:
- Since используется, когда мы говорим о конкретной точке во времени, когда что-то началось. Например: "since 2010", "since I was five years old".
- For используется, когда мы говорим о продолжительности времени, например: "for three years", "for ten years".
Теперь давайте заполним пропуски в предложениях:
- Sarah has been studying French for three years.
- They have known each other for three years.
- We've lived in this house since 2010.
- She has been waiting at the bus stop for an hour.
- He has been playing the piano since he was five years old.
- They have been friends since they met in college.
- John has been working at the company for five years.
- The kids have been playing in the park for two hours.
- She hasn't eaten anything since breakfast.
- He's been living in London for 10 years.
- The store has been closed since noon.
- They've been married for ten years now.
- I have been writing this novel for months.
- He's been practicing his guitar skills since he was a teenager.
- The dog has been barking since we arrived.
Надеюсь, это помогло вам понять, как правильно использовать "Since" и "For". Если у вас есть вопросы, не стесняйтесь задавать их!