4. определите время и залог сказуемого 1. the electric motor was invented by b. s. jakobi in 1834. 2. any instrument which measures electrical values is called a meter. 3. an ammeter measures the current in amperes. 4. the unit is named after andre marie ampere, a french scientist, who discovered a great number offacts about electricity over a hundred years ago
measures - Present Simple Active
is called - Present Simple Passive
measures - Present Simple Active
is named - Present Simple Passive
discovered - Past Simple Active