No, the clause 'Mrs. Mills shopped' is a singular, proper, compound noun as subject (Mrs. Mills) of the past tense verb (shopped).
Note: 'Mrs. Mills' is a proper noun as the name of a specific person; proper nouns are always capitalized.
Mrs Mills died in 1978.
Mrs Mills was born in 1918.
Nouns ending in -z (common or proper nouns) add -es to the end of the word to form the plural: Mr. and Mrs. Heintz or the Heintzes.The plural possessive form is Heintzes'.
There are two accepted forms for possessive singular nouns ending in s: Add an apostrophe (') after the existing s at the end of the word: Mrs. Lastrapes' Add an apostrophe s ('s) after the existing s at the end of the word: Mrs. Lastrapes's Examples: Mrs. Lastrapes' garden looks beautiful. Mrs. Lastrapes's garden looks beautiful.
The possessive form for Mrs. Bates is Mrs. Bates's.
There are two accepted forms for possessive singular nouns ending in s:Add an apostrophe (') after the existing s at the end of the word: Mrs. Jones'Add an apostrophe s ('s) after the existing s at the end of the word: Mrs. Jones'sExamples:Mrs. Jones' office is on your right.Mrs. Jones's office is on your right.
The possessive form is Mrs. Simmons'.
The possessive form of Mrs. Brown is Mrs. Brown's. For example, "Mrs. Brown's house."
The possessive form of Mrs. Gonzales would be Mrs. Gonzales's. In some cases, you make a noun that already ends with 's' by adding the apostrophe 's' to the end of a noun when you pronounce the added 'es' sound for the possessive.If you are in doubt which nouns ending with 's' should have the extra 's' added for plural or possessive, say it both ways to see if you are using the 'es' after the 's'. Some other examples are Texas's flag, the boss's office, and Gus's father.
possessive form of Mrs Santos: Mrs. Santos' or Mrs. Santos's. Although names ending in s or an s sound are not required to have the second s added in possessive form, it is preferred.
The plural form for Mrs. Reed is the Mrs. Reeds; the plural possessive form is the Mrs. Reeds'.
The plural for Mrs. Gonzales is the two Mrs. Gonzaleses; the plural possessive is the two Mrs. Gonzaleses'.Both common and proper nouns ending in ch, sh, s, x, and z add -es to the end of the word to form the plural.Plural noun forms that already end in -s add only an apostrophe after the existing -s to form the plural.