I had been studying English for years
I has studied for many years
I have been studying English long ago
I have been studying English since 2010
The typewriter is a very modern device.
The typewriter was invented before the computer
Everybody uses a typewriter nowadays.
The computer is more modern than the typewriter
People use the typewriter more than the computer
The typewriter was a very modern device in the forties
I am working right now.
She is going to the market later on.
I already did that.
There is no day like today
Becareful or you'll have to do it all over again.
They're gonna organize their house today.
The train arrives in two hours.