I am wondering why would someone say "I can't seem to" instead of simply saying "I can't". Is there any specific difference between the two? Is the former usage informal? Is it correct to say that the following two phrases are equivalent?
I can't seem to do something.
It seems that I can't do something.
Some sample sentences:
I can’t seem to subscribe to a Google Reader ‘starred items’ feed that I’ve created.
I can't seem to stop arguing with my partner.
I can't seem to make friends.
I can't seem to transfer my videos directly from one playlist to another.
Client: I can’t seem to find the search box, can you please make sure it’s working? Me: The search box is in the top left hand corner of every page. Client: Is that on your left or my left?