Algebra lineal

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VERB TENSES PRESENT PRESENT SIMPLE: Este es un tiempo verbal que se utiliza para expresar acciones permanentes o que tienen lugar en el presente y con una frecuencia determinada, es decir, cada día, cada mañana, etc. + Affirmative: Subject + verb (infin.) s + complements Examples. − I eat a lot. \ He eats a lot. − Negative: Subject + do/does not + verb (infin.) + complements Examples.− I don't /do not eat much. \ He doesn't / does not eat much. ? Interrogative: (QW) + do/does + subject + verb (infin.) + compl. ? Examples.− Do you eat much? \ Why does he eat much? * Passive: Subject (CD) + is/are + verb (participio) +compl. Examples.− + I eat a lot of chocolate \ *A lot of chocolate is eat (by me) PRESENT CONTINUOUS: Es un tiempo verbal que se utiliza para expresar acciones que tienenlugar en el presente, en el mismo momento en el que se está enunciando la frase y para un futuro organizado. + Affirmative: Subject + to be (present) + verb (infin.)−ing +complements Examples.− I am eating a hot−dog \ He is eating a hot−dog −Negative: Subject + to be not (present) + verb (infin.)−ing +complements Examples.− I'm not / am not eating a hot−dog\ He isn't/is not eating a hot−dog ?Interrogative: (QW) + to be(present)+ subject + verb(infin.)−ing+ compl.? Examples.− Are you eating a hot−dog?\ What is he eating now? *Passive: Subject (CD) + is/are+ being+ verb (participio) +compl. Examples.− +They are repairing my piano\* My piano is being repaired (by them) PRESENT PERFECT SIMPLE: Es un tiempo verbal que se utiliza para expresar acciones que han tenido lugar en el pasado, pero en unpasado muy reciente, acciones que empezaron en el pasado y continúan en el presente o acaban de terminar o tienen consecuencias en el presente. + Affirmative: Subject + have/has + verb (participio) + complements Examples.− I've/ have walked for two hours\ He's/has walked for two hours.

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−Negative: Subject + have/has not + verb (participio) + complements Examples.− I haven't/have notwalked for two hours\He hasn't/has not walked ?Interrogative: (QW) + have/has + subject + verb (participio) + compl. ? Examples.− Have you walked for two hours?\Has he walked for two hours? *Passive: Subject (CD) + have/has+ been+ verb (participio) +compl. Examples.− + They have found the car\ *The car has been found PRESENT PERFECT CONTINUOS: Es un tiempo verbal que se utiliza para hablar de unaacción pasada que acaba de concluir, cuyo resultado es evidente; para hablar de una acción que empezó en el pasado y puede haber acabado recientemente o que continúa en el presente, se resalta la duración de la actividad con for o since. +Affirmative: Subject + have/has + been+ verb (infin.)−ing + complements Examples.− I've/ have been running this morning\ He's/has been running for one hour −Negative:Subject + have/has not + been+ verb (infin.)−ing + complements Examples.− I haven't/have not been running for two hours\He hasn't/has not been running since yesterday. ?Interrogative :(QW)+ have/has + subject +been+ verb(infin.)−ing+ compl. ? Examples.−Have we been cooking for a hour?\Has he been running this morning? *Passive: Subject(CD) + have/has+ been +being+ verb (participio) +compl.Examples.− + PAST PAST SIMPLE: Es un tiempo verbal que se utiliza para expresar acciones que tuvieron lugar en el pasado, sin que importe excesivamente el momento del pasado en el que tuvieron lugar. + Affirmative: Subject + verb (past) + complements Examples. − I played in the park. \ He ate a lot. − Negative: Subject + did not + verb (infin.) + complements Examples.− I didn't/did not eat much. \ Hedidn't/did not play in the park. ? Interrogative: (QW) + did + subject + verb (infi.) + compl. ? Examples.− Did you eat much? \ Did he play in the park? * Passive: Subject (CD) + was/were+ verb (participio) +compl.

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Examples.− +Shakespeare wrote Romeo and Juliet\*Romeo and Juliet was written by Shakespeare PAST CONTINUOUS: Es un tiempo verbal en el que se expresan acciones que tuvieron...
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