1. Somebody has estimated that normally you breathe 25,920
times a day breathing in about 450 cubic feet of air.
2. Lately a new
group of viruses called adenoviruses have been isolated from the human
intestine and respiratory tract in tissue cultures. It has been
determined that their presence produced nothing pathologic.
3. Everyone should remember that the connection of any
virus with the body tissues considerably changes their properties.
4. Everybody knows that when a virus invades the cell it
multiples there and produces a number of pathologic processes.
<span>
1. Кто-то подсчитал, что обычно мы дышим 25,920 раз в день, вдыхая около 450 кубических футов воздуха.
2. Недавно в посевах тканей кишечника </span><span><span>и дыхательных путей </span>человека была выделена </span><span>новая группа вирусов, называемых аденовирусами. Было установлено, что их присутствие не вызывает никаких патологий.
3. Каждый человек должен помнить, что проникновение любого вируса в ткани организма значительно меняет их свойства.
4. Всем известно, что, когда вирус проникает в клетку, он размножается там и вызывает целый ряд патологических процессов.</span>
He has already caught the goats.
he has already made an umbrella.
he has already made ( baked ) bread
he has already built a house
1. Are there any fruit trees in front of my house?
2. Do I live in a new district?
3. Can we go out for a walk now?
4. Do you have to switch off the tape-recorder?
5. Are the walls of our kitchen whitewashed?
6. Does my friend live in his own house?
7. Do we often receive guests in the sitting room?
1. There are not any fruit trees in front of my house.
2. I do not live in a new district.
3. We can not go out for a walk now.
4. You must not switch off the tape-recorder.
5. The walls of our kitchen are not whitewashed.
6. My friend does not live in his own house.
7. We do not often receive guests in the sitting room.
Alice is watching tv.
They are working.
A student is not going to school.
Are they cooking a dinner?
Boys are reading books now.
She is not going to the institute.
Are they doing morning exercises at the moment?
Он случает музыку сейчас.
Они пишут имэил своим друзьям из Испании.
Она идет сейчас в спорт зал?
Мы не читаем текст, мы переводим предложения.
Чем ты занят сейчас?
Читаю газету.