You could use apostrophes
If youd put them where you shoul'd
Then you write infinitives - splitting
To often do that ain't no good
 
All you do is call me
I am ready to proof-read
 
You could use a preposition
That you shouldn't end a sentence with.
Maybe make less mistakes (Fewer!)
But some things I can't forgive
 
I hate to see bad grammar
Perfection is the aim
Don't let me see bad grammar
Won't you get it right, now sonny...
 
You think I'm a fruitcake, flipping
When you say "the data is"
Can't you see the mistake?
It ain't that hard an English quiz
 
I hate to see bad grammar
Capitalize my name
No, none at all - bad grammar
Put your mind to work
There's gonna be no bad grammar
So don't stand on ceremony
Fix your bad grammar
Let there be no doubt about it
 
Bad!  Bad!  Bad grammar
 
I hate the habit of texting
b4 i go u r gonna pack it in - gonna pack it in
So if you write for me
I'll make it right for you
Write for me, make it right for you
Yes, yes, yes, yes, yes, yes, I do mean you
 
Now could you
Learn what to do?
Going to learn that grammar
Learn, learn all that grammar
You've been needing tuition
You've been needing tuition
Going to learn that grammar, teaching you
come on, come on, learn it, do
Yes, yes, yes, yes, yes, yes, yes, yes, you
I've been giving tuition
I've been giving tuition
Check what you're doing, doing
Just get it right