The most basic Chinese modal verbs: 会 , 能 , 可以
The best way to develop a clear understanding of usage the modal verbs is to familiarize yourself with various sentence examples. One the most Interesting explanation about applying 会，能，可以 was posted by Linguoholic on his the same name forum. It is short, clear and has pretty good examples. You can check it in this article after the poster. However, by talking about an additional way to consolidate new knowledge in memory, very effective practice is to visualize it in infographic diagram:
The explanation by Linguaholic:
The modal verb 会 that can either indicate a probability like "be likely to" / "be sure to" or inherent or acquired ability/skill: “can", "be able to", "be good at", "be skillful in":
Is it likely to rain tomorrow (Is it going to rain tomorrow?)
Can you speak Chinese (or not)?
The difference between 会 and 能 can be explained by the following examples:
I can drive (a car), but now as I have been drinking beer, I am not going to drive.
I drink beer, but now as I'm driving today , I am not going to drink
( I am not allowed to drink )
The modal verb 可以 implies permission from outside authority, whereas 能 refers to the ability to do something in special circumstances:
You are not allowed to smoke here.
I was not able to come yesterday night. (I didn't make it yesterday.)
Modal verb is a type of auxiliary (helping) verb that is used to express: ability, possibility, permission or obligation. They are placed directly before other verbs to indicate particular moods or attitudes. The Most common of Chinese modal verbs are 能，会，要，敢，可以，必须，肯.