MÓDULO 8 - UNIDAD 4 - PROGRAMA 3GRAMMAR STRUCTURESMust, have to, needn't, don't have to, mustn't, not be allowed to Revision of past tenses. LEXISCountries and nationalities PRONUNCIATIONComparison of /i/ and /e/ Falling intonation in statements. Listening activity about immigration STUDY SKILLSVerbal strategies:explaining unknown words. CROSS CULTUREMixture of races in American society today.