The simple present\the present progressive

[Slava]

I would like to ask a question about the difference betwenn expressions

The doors open in 10 minutes.
The doors are opening in 10 minutes.
Tell me when I must use the firts form and when I must the second form.

Thank you

[Pete]

I would like to ask a question about the difference betwenn expressions

The doors open in 10 minutes.
The doors are opening in 10 minutes.
Tell me when I must use the firts form and when I must the second form.

Thank you
Use the simple present to say implicitly that something has been scheduled to happen:
- The doors open in 10 minutes. [We know this because it is on the published schedule of activities.]
- Our tour reaches Paris on Friday and Cannes the following Monday. [I know this because it is listed on the tour itinerary.]

You can use the present progressive to show simple future, that something is expected to happen (though other forms like "will" or "is going to" probably more commonly used for this). That is probably the use of
- The doors are opening in 10 minutes. [You are simply saying what is going to happen.]

The present progressive is most usually used in this way when there has an agreement to do something:
- Pat is seeing the new Harry Potter movie with me this Saturday.
- Chris is coming here for dinner tomorrow.

[Bridget]

I would like to ask a question about the difference betwenn expressions

The doors open in 10 minutes.
The doors are opening in 10 minutes.
Tell me when I must use the firts form and when I must the second form.

Thank you


I agree with Pete, but would like to add that both your examples could have exactly the same meaning.