It's a strange story, but it may/might/could be true.

[Kjaadere]

When can I use use 'can' for possible actions in the present or future?

I thought that we can use 'could/may/might' but not 'can' for possible actions in the present or future:
- It's a strange story, but it may/might/could be true. (=perhaps it is true or it is possible that the story is true)
- Take an umbrella. It may/might/could rain later. (=perhaps it will rain later or it possible that it will rain later)

But there are also sentences like this one:
- Do you think he can still be alive? [=do you think it is possible that he is still alive?]

From: https://www.britannica.com/dictionary/can (the meaning 3a)

 

[Piscean]

Have you a question for us?

 

[Kjaadere]

Have you a question for us?

Yes, can you see it at the top?

 

[Rover_KE]

Your question needs to be in the main body of your post.

 

[emsr2d2]

@Kjaadere On this occasion, I have fixed the problem for you. I have improved your thread title by making it one of the sentences you're asking us to look at. I have moved the question to the top of the main body of your post. Please make sure you follow that layout for all threads in future.

 

[Tarheel]

I would say:

I thought we could use ...

 

[jutfrank]

Do you think he can still be alive?

This example is not about an action and it's not about the future. It's a kind of present possibilty.

Look at the other examples listed in the Brittanica dictionary and let us know which ones you don't understand.