Условие:
History of electrical engineering
Electricity has been a subject of scientific interest since at least the early 17th century. The first electrical engineer was probably William Gilbert who designed the versorium: a device that detected the presence of statically charged objects. He was also the first to draw a clear distinction between magnetism and static electricity and is credited with establishing the term electricity. In 1775 Alessandro Volta's scientific experimentations devised the electrophorus, a device that produced a static electric charge, and by 1800 Volta developed the voltaic pile, a forerunner of the electric battery.
However, it was not until the 19th century that research into the subject started to intensify. Notable developments in this century include the work of Georg Ohm, who in 1827 quantified the relationship between the electric current and potential difference in a conductor, Michael Faraday, the discoverer of electromagnetic induction in 1831, and James Clerk Maxwell, who in 1873 published a unified theory of electricity and magnetism in his treatise Electricity and Magnetism.
Найдите в тексте словосочетания, образованные по модели to be+V3 (Passive Voice)
Решение:
Рассмотрим текст по шагам, чтобы найти словосочетания, построенные по модели to be + V3 (то есть форма глагола to be в нужном времени и форма V3 – третья форма основного глагола, используемая для образования страдательного залога). 1. Проанализируем первое предложение: «Electricity has been a subject of scientific interest since at least the early 17th century.» Здесь присутствует конструкция «has been», но далее следует именная часть «a subject of scientific interest». Эта конструкция – сказуемое-связка, а не страдательный залог с действием. Поэтому это не пример пассивной конструкции по ...