Ударная гласная читается по правилу типа слога

ударная гласная i читается кратко

-tion: a’ttention, construction, destruction, election, promotion, relation, nation; -ssion: co’mission, mission, permission, profession; гласн. + -sion; co’llision, conclusion, decision, division, explosion, invasion, occasion, precision, provision.

Слова, состоящие из четырех и более слогов, имеют два ударения. Второстепенное ударение предшествует главному и отстоит от него на один слог:

,adap’tation, education, complication, constitution, corporation, declaration, demonstration, domination, explanation, indignation, operation, opposition, population, recognition, registration, relaxation, reputation, resignation, satisfaction;,auto’matic, democratic, diplomatic, economic, optimistic, pessimistic;,corres’pondent, entertainment, manufacture, propaganda; a,ccomo’dation, administration, capitulation, congratulation, exaggeration, imagination, investigation;,meta’llurgical, productivity, satisfactory.