Simple Past or Present Perfect

What are the auxiliars we use in the Present Perfect tenses?

• Did

• Do/Does

• Have/Has

• Was/Were

Which time expression is used with Simple Past Tenses?

• Specified time expressions

• Unspecified time expressions

What happens with the main verb on the Present Perfect Tense

• We use the participle form of the verb

• We add -ED

• We add -S,ES,IES

• The verb doesn't change

She ___ to the mall this morning

• went

• gone

• go

• has gone

My father and I ___ this game before

• didn't play

• has played

• have play

• haven't played

When I was in the Mall I___ my wallet

• has lost

• lost

• lose

• have lost

____ she ____ her mother lately?

• Has / Seen

• Have / Seen

• Did / Seen

• Did / See

They ___ to Canada in their last vacation

• travel

• has traveled

• have traveled

• traveled

Mary ____ in the U.S.A. for 4 years

• have lived

• lived

• has lived

• live

What happens to the main verb on the Simple Past Negative and Questions tenses?

• We add -ED

• We change the verb EX: go -> went

• Nothing, it continues in the base form

• We add: was, were