lunes, 27 de agosto de 2012

Semana 8 : Phrasal Verbs / Present Perfect continuos

PHRASAL VERBS Se llaman "phrasal verbs" a los verbos que están compuestos por más de una palabra. Siempre existe un verbo seguido de una o dos partículas. Por ejemplo: to run verbo común (correr) to run away phrasal verb (escaparse) to run out of phrasal verb (quedarse sin) Como puedes observar, al agregar las partículas cambia totalmente el significado del verbo. He aquí la dificultad de aprender a utilizar correctamente estos verbos. Existen dos tipos de phrasal verbs: separables o inseparables. En los primeros se puede separar el verbo principal de la partícula: Tom takes off his coat. Tom se saca el abrigo. Tom takes his coat off. Tom se saca el abrigo. En los verbos inseparables esto no es posible: Tom came across the keys while he was cleaning the room. Tom encontró las llaves mientras limpiaba la habitación. PRESENT PERFECT CONTINUOS
Meaning 1.We use present perfect continuous to talk about an action or event that started in the past and is still happening now. •I've been waiting for over an hour. (I'm still waiting now) •It's been snowing since 8am. (It's still snowing now) •You've been playing a lot of tennis recently. 2.We often use How long in questions. •How long have you been learning English? (You started learning in the past and are still learning now) 3.We use present perfect continuous to talk about an activity or event that has recently finished and has a result or consequence now. •She's tired because she's been working hard. •I have no money left because I've been shopping. 4.We use present perfect continuous to focus on the action and not on the completion of the action. •She's been writing a book. (Focus on the action) She's written a book. (Present perfect simple - focus on the result) •They've been negotiating the contract. (Focus on the action, it's not important if it's finished or not) They've negotiated the contract. (Focus on the result, the negotiation is finished) 5.When the action or event is more temporary we often use present perfect continuous, and when it is more permanent we often use present perfect simple. •They've lived in Italy for may years - Present perfect simple •I've been living here for a month - Present perfect continuous

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