Hola, podrian ayudarme con esto Since ( a determined poin) - for (period of time)En un cuadro de since y for necesito acomodar estas palabras que me dieron en la columna que corresponda : 1997 - 6 mon?

Respuesta : "FOR" + PERIODO DE TIEMPO

for six years, for a week, for a month, for hours, for two hours

I have worked here for five years.

"SINCE" + MOMENTO CONCRETO

since this morning, since last week, since yesterday

since I was a child, since Wednesday, since 2 o'clock

I have worked here since 1990.

"PRESENT PERFECT" CON "FOR"

She has lived here for twenty years.

We have taught at this school for a long time.

Alice has been married forthree months.

They have been at the hotel for a week.

"PRESENT PERFECT" CON "SINCE"

She has lived here since 1980.

We have taught at this school since 1965.

Alice has been married since March 2nd.

They have been at the hotel since last Tuesday.