How do you pluralize do and don't?
The plural of do is dos or do's (the rare apostrophe plural because the word dos looks like the Spanish word for two.
The contraction don't forms a regular plural don'ts.
The pair is a colloquial form spelled in one of these fashions:
do's and don'ts
dos and don'ts
meaning a list of things that should or shouldn't be done.
In English, almost all nouns pluralize by adding an 's' or an 'es': dog, dogs; box, boxes. Other nouns pluralize by changing their spelling: man, men; person, people. Still others do so by adding a suffix: child, children; ox, oxen. A few, based on Latin words, change their suffix: datum, data; radius, radii. And some don't change at all: sheep, sheep; offspring, offspring. There are other ways to pluralize, but you get the idea.
To pluralize a last name, generally add an "s" to the end of the name without changing the spelling of the name. If you are talking about a whole family, such as the Smith family, call them "the Smiths." Names that end in sh, ch, s, or z add -es to form the plural: the Marshes; the Binches; the Joneses; the Katzes
There are very few words in English that don't pluralize with an "s". For example, just because the plural of mouse is mice does not mean the plural of house is hice. But maybe teaching them a few more words that pluralize funny in English may help. Good luck!! footfeet goosegeese louselice manmen mousemice toothteeth womanwomen