If you had a car, you could traveled around the United States.
If you had a car, you could travel around the United States.
YPTETR
PRETTY
By the time I return to my country, I (be) away for six months.
By the time I return to my country, I WILL HAVE BEEN away for six months.
Some students would rather to study on their own than going to classes.
Some students would rather study on their own than go to classes.
PCETEFR
PERFECT
I didn't buy a bicycle because I didn't have enough money, but if
...if I had had enough money, I would have bought a bicycle.
In the United States elementary education is compulsory. All children (attend) six years of elementary school.
In the United States elementary education is compulsory. All children HAVE TO ATTEND six years of elementary school.
The police has been called.
The police HAVE been called.
PTTIANE
PATIENT
The child is crying because his mother isn't here, but if
...but if his mother were here, he wouldn't be crying.
Dave is reading a novel right now. He (read) that novel for the past three days.
He HAS BEEN READING that novel for the past three days.
A: Why didn't you come to the party last night? B: I had to study. A: You (come). We had a good time.
You SHOULD HAVE COME. We had a good time.
PYLLUAF
PLAYFUL
One scientific theory says that an asteroid collided with the earth, causing dinosaurs to become extinct, but if this asteroid...
If this asteroid had not collided with the earth, dinosaurs would not have become extinct. (might not have become extinct)
Tomorrow after dinner, we are going to a movie. In other words, we (eat) dinner by the time we (go) to the movie.
...we WILL HAVE EATEN dinner by the time we GO to the movie.
The TV is on, but nobody is watching it. Dad was watching it a few minutes ago. He (forgot) to turn it off.
He MUST HAVE FORGOTTEN to turn it off.
PSETSNOAIA
PASSIONATE