If we can say: Peter's the best friend of mine
Can we say: Lewis's the best friend of mine
Or do we have to say: Lewis is the best......
Thank you for your help
(I'm not a teacher.)
In words which end with s, it goes like this:
Just an apostrophe, no extra s.
Also, the sentences you wrote should be like this:
"Peter is a best friend of mine."
"Lewis is a best friend of mine."
"Peter is my best friend."
"Lewis is my best friend."
Do you understand why?
Kazaman, the OP is asking about the contraction not about a possessive. Just adding an apostrophe is never acceptable for a contraction.
Originally Posted by Kazaman
I would pronounce the is when the name ends in -s. I don't know if we "have to".
I would use the full form for a name ending in an "s."
The idea of a contraction is to save time in pronunciation. "Peter's" instead of "Peter is" saves a syllable.
"Lewis's" would basically be pronounced the same as "Lewis is." So there is no point to trying to make it a contraction.
In formal writing, I would use the contraction with neither.