Перепишите следующие предложения;
подчеркните в каждом из них модальный глагол или его эквивалент. Переведите предложения на русский язык.
1.
Heat can be divided into three different types.
2.
A great number of plastics should find their applications in the electrical industry.
3.
Chemical means had to be used for the separation of compounds into their
elements.
4. The existence of an X-ray laser in the future may be
possible.