Prefixes – in, il, im, ir
These prefixes all mean ‘not’.
Prefixes can change the meaning of a word.
Words that sound the same but have different spellings and meanings.
Possessive apostrophes for singular possession
The general rule is that the possessive of a singular noun is formed by adding an apostrophe and s, whether the singular noun ends in s or not.
e.g. Joe’s pencil case.
Words that end in ‘ure’
e.g. measure, treasure, pleasure