PRESENT SIMPLE AND PRESENT CONTINUOUS
Para diferenciar bien el presente simple del presente comtinuo, recuerda que las expresiones de tiempo son una buena pista. El presente simple puede ir acompañado de adverbios de frecuencia (always, frequently, often, generally, usually, sometimes, rarely, seldom, never), o de expresiones de tiempo que aclaran la "frecuencia" con la que ocurre la acción (once-twice a week/a month/ a year, on Mondays, in Summer, in January...).
Exercise 1. Pre-intermediate level.
Exercise 2. All levels.
Exercise 3. All levels.
Exercise 4. Pre-intermediate level.
Exercise 5. Pre-intermediate level.
Exercise 6. Present simple or continuous?. Intermediate level.
Exercise 7. From 12 to 14.
