No. Apostrophes are almost never used to form a plural.
The spelling ski's is a possessive noun, e.g.
He has to be careful of his left ski's position on the last turn.
His right ski's color is black and his left ski's color is white.
The possessive of the word ski is ski's
The possessive of the plural skis is skis's.
Skis's is usually just written as skis'
No the word ski is a singular noun.
The plural noun is skis.
No. The word skies is the plural of "sky." The plural of ski is skis.
No, the plural form skis is a regular plural for the singular noun ski. A regular plural is a noun to which an -s or an -es is added to form the plural. An irregular plural is plurals formed in some other way.
The plural form for the noun ski, or any noun ending with -ski, is skis (-skis).
skisskis
he skis better than you
I/you/we/they ski. He/she/it skis. The present participle is skiing.
Ski wax lets the skis glide over snow.
you put skis on your feet, on a ski slope and you ski down it.
You can snow ski or water ski, but you are always ON the same thing- skis!
you use skis to ski on snow and when you do ski jumping
Ya if you have skis, are in the mountains, and there is snow you can ski anywhere!
Yes, you could ski with water skis in new england if you wanted to. You ccan ski with any type of ski anywhere. but the skiing in NE is bad, there is no powder so you will be better of with a carving ski.
the back of the ski