MÓDULO 7 - UNIDAD 2 - PROGRAMA 2GRAMMAR STRUCTURES One / ones used as pronouns. Past perfect and past simple Prepositions + ing form LEXIS American English / British English: differences in vocabulary and spelling. PRONUNCIATIONComparison of /I/ and /e/ Stress in three-syllable words PREDICTING SKILLSOrganisation of text: main and secondary ideas. CROSS CULTUREEnglish and American culture. American history.