TY  - BOOK
AU  - Wilcox Peterson, Patricia
TI  - Changing times, changing tenses
U1  - 420.531 
PY  - 1988///
CY  - Washington : 
PB  - Bureau of Educational and Cultural Affairs, 
KW  - Gramática inglés
KW  - Tiempos verbales en inglés
N1  - The present tense -- The present continuous tense -- The present perfect tenses -- The past tense -- The past habitual tenses -- The past continuous tense -- The past perfect tenses -- The future tenses -- The future continuous tense -- The future perfect tenses
ER  -