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Mikhail Lomonosov (1711-1765) was a Russian scientist and writer who made significant contributions to literature, education, and science. Among his discoveries was the atmosphere of Venus. He was interested in chemistry, physics, optics, geography, history, and art. His poetry contributed to the development of the modern Russian language.
Lomonosov was born in the village of Denisovka (now Lomonosovo) under Kholmogory in the far North of Russia. His father, originally a fisherman, eventually bought a ship and started transporting things from Arkhangelsk to other places. When Mikhail was ten, his father decided that the boy was old enough to help him.
However, the young Lomonosov was not interested in the family business. Learning was what he wanted. His neighbor taught him to read, and he spent as much time as he could on books, among which was a grammar and a book of arithmetic. The knowledge he received at home was not enough for Lomonosov, and in 1730, at the age of nineteen, he left the village and joined a caravan going to Moscow.
Here he entered the Slavic Greek Latin Academy and for a long time lived on bread and water, but quickly began to Excel in his studies. He completed a twelve-year course of study in just five years and graduated from the Academy with excellent results. As a fantastic student, he was given the opportunity to go to Saint Petersburg University and then to the University of Marburg in Germany.
The latter was one of the most important universities in Europe in the 18th century. Lomonosov quickly learned German and showed an interest in German literature and philosophy. He studied chemistry seriously and started writing poetry. In Germany, Lomonosov married. The money he received from the Russian Academy of Sciences was not enough for his growing family, and he decided to return to St. Petersburg.
At home, he became a member of the Academy and soon became a Professor of chemistry. Wanting to improve education in Russia, he and count Ivan Shuvalov founded Moscow University.
Lomonosov developed a number of important theories and made several brilliant discoveries, wrote poems, some of which are remembered to this day.
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Put the verbs in brackets into the Past Simple or the Present Perfect Tense.
1) What has he just said? -- He has said that the group of tourists left our town last night.
2) They have already left for Greece. They have not been there yet.
3) What book did you show me five minutes ago?
4) Where have they been this year? -- They have already been to Poland. They went there three months ago.
5) Has Mr Folly paid the bill? - Yes, he paid the bill an hour ago.
6) When did Polly come home? - She has not eturned home yet.
7) Have they ever taken a big sum of money from the bank? - No, they haven't.
8) When did Clara water the flowers? - She has not watered them yet.
9) Have the workers finished their work? -- Yes, they painted the walls yesterday.
10) Have you ever taken Tommy to the zoo?
Смотря в каком контексте. Если имеется в виду просто факт — команда работает над этим — то нужен Present Simple. Например, когда нужно сказать в целом, что команда над чем-то работает. Не рассматривается конкретный случай. Схожими по принципу предложения будут: "Мой папа работает в кафе", "ученые занимаются такими-то исследованиями", "я хожу в школу" и прочее. То есть не в данный момент это происходит, а можно сказать, регулярно.
Но когда у вас есть реальный случай, то нужен Present Continuous. К примеру, вы обратились к поддержке какого-то сервиса с устранить проблему. Вы получите такой ответ: "Команда работает над этим" — The team is working on it. Могу сказать, что чаще всего в контекстах именно нужен Present Continuous, хотя, как я писала выше, не исключено и использование Present Simple.
Таким образом, Present Simple используем тогда, когда нам нужно в целом описать какую-то деятельность. Present Continuous стоит использовать в случаях конкретной ситуации, когда идёт акцент на продолжительности действия (команда "есть работающей", а не просто работает каждый день или каждую субботу, например).