No, nouns ending in 's' are not always plural; some examples are:
Two plural words ending in '-s':table > tableschair > chairs
Some words that end in -s that are always plural are:accommodationsamendsarchivesbarracksbinocularsbowelsclothescommunicationscongratulationscontentscrossroadsforcepsgallowsglasses (vision aid)goodsheadquartersjeansmathematicsmeansnewspajamaspantsscissorsseriesshortsspeciesstairstongstrouserstweezers
For an English plural, the answer is never. Some words ending in the letter 's' are made plural by adding 'es', such as one bus, two buses or one class, two classes.
Some plural words ending in "o" are photos, pianos, casinos, and zoos.
Some words ending in o that form their plural by adding s only include: pianos, duos, solos, tacos.
The usual plural form for words ending in -f or -ef is to drop the f and add ves. There are exceptions to this rule where only an s is added to the end of the words.
For words ending in consonants, either add s or es. In this case- es. The plural is kisses.
I always go with Lucas's and then use Lucas' as the singular possessive. As for plural Lucas possessive, I just try to avoid those scenarios. I wouldn't use Lucas's'. That just looks ridiculous.
The plural of país is países.In Portuguese, words (nouns\adjectives) ending with and a S follow the general rule of the plural of words ending with a consonant, which is by adding -es.Bear in mind that there are many irregular plural forms in Portuguese and we always should pay attention to one word's stress.For instance, nouns and adjectives ending with a S but for a word with stress on the penultimate syllable, the plural is the same form of the singular, e.g.: um lápis/cem lápis (one pencil/one hundred pencils), atlas/atlas, etc.
the plural form of words ending in ss, like kiss, is just adding es (kisses) (sorry, kiss was the only word ending in ss i cud think of)
In most cases, yes. Not in every case though... words ending in ch, x s or z get es added to form the plural, and for words ending in y, change the y to ies.
To form the plural of words ending in 's', you add '-es'. Princess, princesses.