I - BE/GO TO LONDON (-)
I HAVEN'T BEEN TO LONDON
- WHERE'S GRANDPA? - HE - BE/GO TO BED
HE'S GONE TO BED.
HE - UNDERSTAND THE LESSON. (-)
HE HASN'T UNDERSTOOD THE LESSON.
- WHY IS HE CRYING? - BECAUSE HIS PARENTS - BOUGH HIM A BIKE (-)
BECAUSE HIS PARENTS HAVEN'T BOUGHT HIM A BIKE.
I - FEED MY DOG. IT MUST BE HUNGRY. (-)
I HAVEN'T FED MY DOG.
HE - DRIVE TO THE BEACH 3 TIMES (+)
HE HAS DRIVEN TO THE BEACH 3 TIMES.
I - BE/GO TO THE USA (-)
I HAVEN'T BEEN TO TH USA.
MY SISTER - LOSE HER WATCH (+)
MY SISTER HAS LOST HER WATCH.
HE - EAT JAPANESE FOOD (-)
HE HASN'T EATEN JAPANESE FOOD
- IS THE TEACHER IN THE CLASSROOM? - NO, SHE - BE/GO TO THE LIBRARY.
SHE HAS GONE TO THE LIBRARY.
- DO YOU KNOW FRANCE? - YES, I - BE/GO THERE 3 TIMES
YES, I'VE BEEN THERE 3 TIMES
HE - RUN A MAROTHON TWICE (+)
HE'S RUN A MARATHON TWICE.
THEY - SWIM IN THAT RIVER. (-)
THEY HAVEN'T SWUM IN THAT RIVER.
MY FRIEND - DO THE HOMEWORK (-)
MY FRIEND HASN'T DONE THE HOMEWORK.
HE - CLEAN THE HOUSE. IT'S A MESS. (-)
HE HASN'T CLEANED THE HOUSE . IT'S A MESS.
I - READ THAT BOOK (-)
I HAVEN'T READ THAT BOOK.
SHE - BREAK HER LEG ONCE (+)
SHE HAS BROKEN HER LEG ONCE.
- IS YOUR DAD AT HOME? NO, HE - BE/GO TO THE BANK.
NO, HE HAS GONE TO THE BANK.
SHE - COME HERE ONCE (+)
SHE'S COME HERE ONCE.
HE - READ THIS BOOK TWICE (+)
HE HAS READ THIS BOOK TWICE