Ilocmabome anazon RCKOCKOX 6 Present Simple uzu Present Continuous.
don eat de
1. Elephants (not/eat) meat. 2. Sundays. 5. Hc (not/work) on Sundays, of course. 6. Look! A big
white bird (sit) in our garden.​

Окей, давай начнем!

В Past Simple форма глагола меняется, чтобы указать на действие, которое произошло в прошлом. Для этого будет использоваться прошедшее время глагола. Поэтому для первого предложения, "I can buy meat and chicken at the butcher's", нужно будет изменить глагол "can" на его форму в прошедшем времени, что будет "could".

Также, обрати внимание на то, что второе предложение уже в прошедшем времени ("must" в Present Simple). Поэтому, чтобы превратить его в Past Simple, глагол не изменится. Он останется таким же - "must".

Итак, получаем следующие ответы:

1. I could buy meat and chicken at the butcher's. (Past Simple)
- Could I buy meat and chicken at the butcher's? (вопросительная форма)
- I could not buy meat and chicken at the butcher's. (отрицательная форма)

2. You must turn left here. (Past Simple)
- Must you turn left here? (вопросительная форма)
- You must not turn left here. (отрицательная форма)

Теперь давай рассмотрим Future Simple, которое используется для обозначения действий, произойдущих в будущем. Для этого мы будем использовать модальный глагол "will" + основная форма глагола.

Итак, у нас есть:

1. I will be able to buy meat and chicken at the butcher's. (Future Simple)
- Will I be able to buy meat and chicken at the butcher's? (вопросительная форма)
- I will not be able to buy meat and chicken at the butcher's. (отрицательная форма)

2. You will have to turn left here. (Future Simple)
- Will you have to turn left here? (вопросительная форма)
- You will not have to turn left here. (отрицательная форма)

Надеюсь, что это понятно и что ответы будут полезны для школьника! Если у тебя есть еще вопросы, не стесняйся задавать!

1. Laser light differs from ordinary light.
Explanation: In this sentence, the preposition "from" is used to indicate that laser light is not the same as ordinary light. Laser light and ordinary light have different properties or characteristics.

2. This difference results from the fact that this light is more intense.
Explanation: In this sentence, the preposition "from" is used to show that the difference between laser light and ordinary light is caused by the fact that laser light is more intense. The intensity of the light is the reason for the difference.

3. ...means by which some microscopes we can observe the movement of these particles.
Explanation: In this sentence, the preposition "by" is used to indicate the means or method through which we can observe the movement of particles using some microscopes. The preposition "by" shows how something is done.

4. This material was examined using new ways.
Explanation: In this sentence, the preposition "using" is used to indicate the method or means by which the material was examined. The preposition "using" shows the way in which something is done or used.

5. He is working on the problem of using the source of light in industry.
Explanation: In this sentence, the preposition "on" is used to show the topic or subject of his work. He is focusing his efforts and attention on the problem of using the source of light in industry.

6. Many new instruments and devices have been built for this purpose lately.
Explanation: In this sentence, the preposition "for" is used to indicate the purpose or reason for which many new instruments and devices have been built. They were created specifically for this purpose.

7. This work consists of two parts, the first one having already been done.
Explanation: In this sentence, the preposition "of" is used to show the composition or components of the work. The work is made up of two parts, and the first part has already been completed.