adding s

[jack]

"All I get is the sales pitch from the car dealers."
"All I get is the sale pitch from the car dealers." <--I am still not too sure why "sale" is "sales"?

But I understand this,
What kind of pitch? A sales pitch; a pitch about sales.

"All I get is the anger pitch from the car dealers." <---correct? why?
"All I get is the angers pitch from the car dealers." <---incorrrect? why?

"I know what brand my shoes are." <--correct? why?
"I know what brand my shoe is." <--incorrect? why? This doesn't sound right to me.

"...if thousands of flying cars enter the skies,...." <---correct? why? what does it mean?
"...if thousands of flying cars enter the sky,...." <---correct? why? what does it mean?

[jack]

"I have a pair of new shoes." <--correct? what does it mean?
"I have a pair of new shoe." <--correct? what does it mean?

"I like your new shoes." <--- correct? Does this mean that I like ones new pair of shoes?
"I like your new shoe." <--correct? Does this mean that I only like one shoe?

[jack]

"Tom's hardware guide." <--what does this mean?
"Tom's hardware guides." <--what does this mean?

[Tdol]

They are both correct- it just depends on whether he has one guide, or more than one.

[jack]

"I have the lyrics for this song." <--correct?
"I have the lyric for this song." <--incorrect?

I know what does lyric mean but I don't really get how to use it.
Lyrics=words of a song?
Lyric=a word of a song?

Can you give me some exmaples by writing me some sentences using "lyrics" and "lyric" please? Thank you.

[Tdol]

'Lyrics' is generally used, though sometimes 'lyric' is used. The both refer to all the words of the song. 'Lyric' might be used for a printed version of the song.

[jack]

'Lyric' might be used for a printed version of the song.

I sitll don't really unerstand the difference between "lyric" and "lyrics".

"The lyrics for this song is ....." <--what does this mean?
"The lyric for this song is ....." <---what does this mean?

"Do you know any places that's selling chemistry books?" <--correct? "places" is countable?
"Do you know any place that's selling chemistry books?" <--correct?

[jack]

"Thank you very much for the replies." <--correct?
"Thanks very much for the replies." <--is this correct? It doesn't sound correct? How can I check these little things on my own?

[Tdol]

You can say 'thanks' or 'thank you', but 'thanks yo'is wrong. 'Thanks' is also less formal.

[jack]

Can you give me some detail about this job? <--correct
Can you give me some details about this job? <--this is incorrect right? Because "details" is not countable, so it has to be "detail"? Just like "information" cannot be "informations"?