+0
I can't remember where that file might be, so may you help me look for it?

To get to our offices, you must take Fontaine Voulevard north and should turn left at Kennedy Road, where you may see our building.

We can't believe that our new computer system, which must be working perfectly, is already crashing and that we might be losing lots of data.

The answer key says the underlined words to the above sentences are incorrect. Can you help me correct them?

LC
+0
You say 'may' when you are asking permission to do something. You can't ask permission for them to do something for you.
Comments  
LcchangI can't remember where that file might be, so may you help me look for it?

Use might, will, can, could.

To get to our offices, you must take Fontaine Voulevard north and should turn left at Kennedy Road, where you may see our building.

Use "will". It's strange to suggest that the person may see the buliding. You assume they will.

We can't believe that our new computer system, which must be working perfectly, is already crashing and that we might be losing lots of data.

That's correct, but I would question the meaning of "must be working" there. If it means "it is a rule that it be working...", then "must" is OK. Otherwise, I'd use "should" or "ought" to.

The answer key says the underlined words to the above sentences are incorrect. Can you help me correct them?

LC
Site Hint: Check out our list of pronunciation videos.
One more question here please.

We oftern say "May I help you?", but why can't we say "May you help me?" Please advsie.

LC
 nona the brit's reply was promoted to an answer.