The dog runs after the truck.
The dog ran after the truck.
I ate a huge pizza.
I eat a huge pizza.
I saw a boy in the park.
I was seeing a boy in the park.
The meteor fell onto the planet.
The meteor is falling onto the planet.
I buy pet fish when I have nothing to do.
I have been buying pet fish when I have had nothing to do.
I can't stop fighting. It's what I was born to do.
I couldn’t stop fighting. It was what I was born to do.
I went through the door and got lost.
I go through the door and get lost.
Your face told me everything I needed to know.
Your face was telling me everything I needed to know.
I usually use a fork to eat soup. I like it like that.
I am usually using a fork to eat soup. I am liking it like that.
I live in complete darkness.
I have been living in complete darkness.
Money makes the world go around, but people stand in the way.
Money made the world go around, but people stood in the way.
My computer is freezing up! It's driving me crazy!
My computer freezes up! It drives me crazy!
Big girls don't cry, but big boys cry all the time.
Big girls weren’t crying, but big boys were crying all the time.
I prefer to eat white pigs. They have the most delicious taste.
I am preferring to eat white pigs. They are having the most delicious taste.
The scorpion stings the frog even though the frog is helping it!
The scorpion has been stinging the frog even though the frog has been helping it!
While running is important, walking is also cool.
While running was important, walking was also cool.
Will humanity be able to save itself in the next hundred years?
Is humanity able to save itself in the next hundred years?
The weather this summer was hotter than any summer on record.
The weather this summer was being hotter than any summer on record.
I don't see any reason why you haven't done your homework.
I am not seeing any reason why you are not doing your homework.
I think of the future, and it makes me hopeful for humanity.
I have been thinking of the future, and it has been making me hopeful for humanity.
I am going to throw the ball, and you had better catch it! If you don't, you will be sorry!
I was going to throw the ball, and you had better catch it! If you didn’t, you would be sorry!
There are almost two hundred children who graduate from the primary school.
I will train every day until I become the one who receives the gold medal.
I was training every day until I became the one who received the gold medal.
If you don't eat your lunch, you won't grow any muscles or strong bones.
If you aren’t eating your lunch, you aren’t growing any muscles or strong bones.
To be, or not to be? That is the question.
To have been, or not to have been? That has been the question.