Let's take a look at our course. The lessons have two parts:
We very often use timelines such as this one:
This is a moment in the past:
And a situation in the past:
In this course we'll talk about 2 types of situations. The first type is called singulary situations:
The second type includes permanent situations:
And serial situations:
With serial situations we use words like every day, on Mondays, often, sometimes etc.
The Progressive is also called the continuous. It's used when we are in the middle of a situation:
Similarly in the future or past:
The Perfect is used with situations before now:
Or before a future or past moment:
The Perfect can also look back at a situation we are in the middle of:
This combination is called the Perfect Progressive.