In / On

[quote=jack]Thanks.

5. I'm going to save my files at a folder. (How come this sounds okay? So no matter what, this is wrong?)

you can save your files IN a folder (paper document/computer files)
you can save your files TO a folder (I would think TO relates to compuetr files only...)

[jack]

Are these correct? What do these mean?

1. This video card peforms very well in this game.
2. This video card peforms very well on this game.
2. This video card peforms very well at this game.

Originally Posted by jack

Are these correct? What do these mean?

1. This video card peforms very well in this game.
2. This video card peforms very well on this game.
3. This video card peforms very well at this game.

They sound a little strange, but I would take them to mean the same thing. I would prefer "This video card peforms very well with this game."

Number three sounds quite wrong to me, because it isn't the video card that plays the game - people play the game.

I might say "John performed very well at tennis", but I wouldn't say 'the ball performed very well at tennis", because it's John who plays tennis - not the ball, the racket or the net.

I would normally use 'in this game' to refer to an element of the game itself.
"There's a big, green, scary monster in this game."

Colloquially, some people use "have a go on" to mean 'play', so the following are possible (though not grammatical)....
"Can I have a go on this game?"
"I've had a go on this game before. It's rubbish."

[jack]

Thanks.

[jack]

Are these correct? What do they mean?
1. Sound virbrates better on wood.
2. Sound virbrates better in wood.

Originally Posted by jack

Are these correct? What do they mean?
1. Sound virbrates better on wood.
2. Sound virbrates better in wood.

I would use "through" instead.

[jack]

Thanks.

But these are not wrong right? If not, which one could I use?
1. Sound virbrates better on wood. (I think this is right? But why? How can 'sound' be on wood? It doesn't make any sense.)
2. Sound virbrates better in wood. (How sounds right, but it doesn't make sense because how can wood vibrate better IN wood?)

Originally Posted by jack

Thanks.

But these are not wrong right? If not, which one could I use?
1. Sound virbrates better on wood. (I think this is right? But why? How can 'sound' be on wood? It doesn't make any sense.)
2. Sound virbrates better in wood. (How sounds right, but it doesn't make sense because how can wood vibrate better IN wood?)

I suppose it's OK if you are conducting some experiments in physics. Sound is all around us so technically it can travel "in" or "on" wood, I guess. But that wouldn't be my first choice of words.

[jack]

Thanks.

What do these mean?
1. She is working on that day.
2. She is working that day. (Is 'on' omitted here?)

Originally Posted by Natalie27

I suppose it's OK if you are conducting some experiments in physics. Sound is all around us so technically it can travel "in" or "on" wood, I guess. But that wouldn't be my first choice of words.

Sorry Jack, my mistake...for some reason I thought you used the word "travel" in regards to sound but the word is "vibrates".
Vibrates on and in wood is correct!

I am really getting confused at times when concentrating on all those prepositions.