Present Perfect is used for actions in an unfinished period of time ('this morning'), and Past Perfect Continuous emphasizes the duration of a past action.
Se utiliza el Presente Perfecto para acciones en un período de tiempo no terminado ('this morning') y el Pasado Perfecto Continuo para enfatizar la duración de una acción pasada.
| Task | It's 10 a.m. Jake _______ (already / to have) four cups of coffee this morning. Poor thing, he _______ (to work) all night long. |
|---|---|
| Answer | 4 |
| a | has already had / has been working |
| b | has already had / had worked |
| c | had already had / had been working |
| d | has already had / had been working |
| comment | 1. We use the Present Perfect for actions which happened in an unfinished period of time - this morning. 2. We use the Past Perfect Continuous to emphasize the duration of an action which was finished in the past. |
| topic | present tenses |
| level | 2 |
Tags: 1023
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