The tense of a verb tells us when the action was done. The action can be done in the past, present or future.

Past
   Present  
Future
I worked late yesterday.
I am working late.
I will be working late tomorrow.


Talking about the Future

There are four main ways of talking about the future.

Form
Meaning / Usage
Example
"will" or "shall" + verb

"Shall" is used
• in polite questions (e.g., Shall I open the window?) and
• in legal documents suggesting duty or obligation
  (e.g., The vendor shall submit the tender documents by 31 December).
volunteering / deciding to do something I'll work late tomorrow.
"going to" + verb talking about plans I'm going to watch a movie tonight.
present continuous talking about definite arrangements in the future Jean: What time are you leaving tomorrow?
John: I'm leaving at 8:00 a.m.
simple present talking about schedule or timetable Our meeting on Monday starts at 9:00 a.m.



the past tense the present tense the future tense