What are suffixes?
A suffix is a letter or group of letters that goes on the end of a word and changes the word's meaning.
Sometimes they also change the original word's spelling. When adding a suffix you might have to double the last letter. For example when adding 'ed' to 'drop' you also double the p so it becomes 'dropped'.
Some suffixes have specific uses. Adding ‘ing’ can change a noun into a verb eg 'garden' to 'gardening'. While ‘ed’ can put a verb in the past tense eg 'jump' to 'jumped'.