springishere
I love pedants' corner, and can never resist adding to it. My pet hate is the loss of the present participle, as in "She was sat", "He was stood". "Different from" is logical as one is moving away, so why "different to" which indicates moving towards. Don't get me started on "I'm good" - well I hope you are! I know language changes but why should grammar change? I had to write out "It's means it is" 100 times when I was at school, and have never forgotten it.
It’s also short for ‘it has’ - as in e.g. ‘It’s been raining’.
I used to make worksheets for my classes of largely Arabic speakers - choose its or it’s and expand it’s into it is, or it has.