1 Have they already eaten all the bread when the waiter brought the meal? 2 How long had he owned the car when he sold

Present Perfect Tense is used to describe actions or events that happened at an unspecified time before now. In question form, it is used to ask if someone has done something or if something has happened.

1. Разъяснение: The first question is asking if "they" finished eating all the bread before the waiter brought the meal. To answer this, we need to use the present perfect tense. If the answer is "yes," we can say, "Yes, they have already eaten all the bread when the waiter brought the meal." If the answer is "no," we can say, "No, they have not eaten all the bread when the waiter brought the meal."

2. Разъяснение: The second question is asking how long "he" had the car before he sold it. We need to use the past perfect tense to answer this question. If the car was owned for 5 years before it was sold, we can say, "He had owned the car for 5 years when he sold it."

3. Разъяснение: The third question is asking if "she" ever phoned the dentist before now. We can answer this question by using the present perfect tense. If she has never phoned the dentist before, we can say, "No, she has never phoned the dentist before."

4. Разъяснение: The fourth question is asking if the baby fell asleep by 11 o"clock. To answer this, we can use the past simple tense. If the baby fell asleep before 11 o"clock, we can say, "Yes, the baby fell asleep by 11 o"clock."

5. Разъяснение: The fifth question is asking if "I" will go to bed as soon as "I" finish all the grammar exercises. To answer this, we can use the future simple tense. If "I" will go to bed after finishing all the exercises, we can say, "Yes, I will go to bed as soon as I finish all the grammar exercises."

6. Разъяснение: The sixth question is asking if "we" should prepare the food before the guests arrive. To answer this, we can use the modal verb "should." If it is necessary to prepare the food before the guests arrive, we can say, "Yes, we should prepare the food before the guests arrive."

7. Разъяснение: The seventh question is asking if "Mum" had already made breakfast before "we" got up. To answer this, we can use the past perfect tense. If Mum had already made breakfast before we got up, we can say, "Yes, Mum had already made breakfast when we got up."

8. Разъяснение: The eighth question is asking if "Kate" started studying after "John" left. To answer this, we can use the past simple tense. If Kate started studying after John left, we can say, "Yes, Kate started studying after John left."

9. Разъяснение: The ninth question is asking if "she" realized that she forgot her book at home. To answer this, we can use the past simple tense. If she realized it, we can say, "Yes, she realized that she had forgotten her book at home."

10. Разъяснение: The tenth question is asking if Lisa"s mother gave her a kitten yesterday because she did well in the concert the night before. To answer this, we can use the past simple tense and the conjunction "because." If Lisa"s mother gave her a kitten yesterday because she did well in the concert the night before, we can say, "Yes, Lisa"s mother gave her a kitten yesterday because she did well in the concert the night before."

Совет: To understand and use the present perfect tense correctly, it"s helpful to study and practice examples of this tense in context. Reading and listening to English materials that use the present perfect tense can improve your understanding and fluency.

Закрепляющее упражнение: Rewrite the following sentences in the present perfect tense:

1. I (finish) my homework before dinner.
2. They (not eat) at this restaurant before.
3. She (visit) France last summer.
4. We (live) in this city for three years.
5. He (already see) that movie.