Comer
Eat - Ate - Eaten
Cuando
When
He told us that he ____________________ on a cruise trip before. (NEVER BE)
He told us that he HAS NEVER BEEN on a cruise trip before.
Most of the world’s elephants ____________________ in Africa and Asia. (LIVE)
Most of the world’s elephants LIVE in Africa and Asia. (LIVE)
The boss ____________________ to the mayor at the moment. You can’t interrupt him. (TALK)
The boss IS TALKING to the mayor at the moment. You can’t interrupt him. (TALK)
Llegar
Arrived
Desde
The headmaster punished the pupils because they ____________________ trouble a few weeks before. (CAUSE)
The headmaster punished the pupils because they HAD CAUSED / HAD BEEN CAUSING trouble a few weeks before. (CAUSE)
I ____________________ for three hours now. There is still no sight of him. (WAIT)
I HAVE BEEN WAITING for three hours now. There is still no sight of him. (WAIT)
________________________ a famous person in his life? (PAUL EVER MEET)
HAS PAUL EVER MET a famous person in his life? (PAUL EVER MEET)
Ver
See - Saw - Seen
Mientras
While
Who _____________________ the guitar upstairs? – It’s Mary. She _____________________ for the concert tomorrow. (PLAY,REHEARSE)
Who IS PLAYING the guitar upstairs? – It’s Mary. She IS REHEARSING for the concert tomorrow. (PLAY,REHEARSE)
In yesterday’s paper I _____________________ that a fire _____________________ out in my neighbourhood (READ, BREAK)
In yesterday’s paper I READ that a fire HAD BROKEN out in my neighbourhood (READ, BREAK)
While I _____________________ with a lovely girl, the whole crowd _____________________ us. (DANCE, WATCH).
While I WAS DANCING with a lovely girl, the whole crowd WAS WATCHING us. (DANCE, WATCH).
Oir
Hear - Heard - Heard
Justo ahora
Just
I ______________________ since nine in the morning, but I ______________________ yet. (WORK, NOT FINISH)
I HAVE BEEN WORKING since nine in the morning, but I HAVEN'T FINISHED yet. (WORK, NOT FINISH)
______________________ to my sister yesterday? – No, I ______________________ her for a long time. (YOU SPEAK, NOT SEE)
DID YOU SPEAK to my sister yesterday? – No, I HAVEN'T SEE her for a long time. (YOU SPEAK, NOT SEE)
______________________ to China? – Yes, I ______________________ there on a business trip a few months ago. (YOU EVER BE, BE)
HAVE YOU EVER BEEN to China? – Yes, I WAS there on a business trip a few months ago. (YOU EVER BE, BE)
Olvidar
Forget - Forgot - Forgotten
Todavía
Yet / Still
After five years of travelling through Asia I _____________________ back to Europe next week. I _____________________ a flight. (COME, ALREADY BOOK)
After five years of travelling through Asia I AM COMING / AM GOING TO COME / WILL COME back to Europe next week. I HAVE ALREADY BOOKED / ALREADY BOOKED a flight. (COME, ALREADY BOOK)
She normally ____________________ the bus to work but today her dad __________________ her. (TAKE, DRIVE)
She normally TAKES the bus to work but today her dad IS DRIVING her. (TAKE, DRIVE)
Since when ______________________ that new car? – When ______________________ it? (YOU HAVE, YOU BUY)
Since when HAVE YOU HAD that new car? – When DID YOU BUY it? (YOU HAVE, YOU BUY)