Mapa mental
PRESENT PERFECT X PRESENT PERFECT CONTINUOUS
Conteúdo do mapa
PRESENT PERFECT X PRESENT PERFECT CONTINUOUS
used to emphasize the duration of an action or situation in progress and not its completition.
- The engineers ______________ (work) on the new project.
used when we want to emphasize that the action has most probably completed.
- They ____________ (work) on the new project.