If you are writing about Robert, then anything Robert owns would be written as Robert's.Robert's book fell on the floor.
If you see the last name Roberts, it already ends in s. To write a possessive, you would add the apostrophe: Roberts'.
A burglar broke into the Roberts' house.
This question makes no sense. The word "Roberts" does not have an apostrophe. The word without an apostrophe may be a name (e.g. "My name is Ruben Roberts.") or it may be the plural of Robert (e.g. "There are four Roberts in our class."). If the word has an apostrophe you know that it is a possessive, either singular (e.g. "I am Robert's girlfriend") or plural (e.g. "The four Roberts' gloves kept getting mixed up.")
The apostrophe would go before the "s" in "Roberts," making it "Robert's mother" to show possession.
It should be Robert's mother.
The correct possessive form is "Jesus's mother," with the apostrophe after the "s" when indicating that something belongs to Jesus.
It should be Mother's Day.
They'd.
Well if her name is "Agne" then the apostrophe would go here "Agne's ". However, if her name is "Agnes" then the apostrophe would go here "Agnes' "
Mrs Debase. (no apostrophe) Mrs Debase's handbag. (Possessive apostrophe)
The apostrophe goes between the r and the s,showing mother's possession of the birthday.Example:"Tomorrow is his mother's birthday."An exception would be if you were talking about two mothers who shared a birthday. Then one might say "Tomorrow is the mothers' birthday," as it is now mothers that possess the birthday.
There is no apostrophe in that sentence. It would be in: The scouts' tents.
The apostrophe would go in the name "Ronald" when indicating possession as "Ronald's". For plural possessive, it would be "Ronalds' ".
The contraction for I would is I'd. I'd go see a doctor if I were you.
After the 's' - the ladies' bags.
If it is required, the apostrophe would come after the Z but before the S. "This is Mr. Buzz's stinger!"
there is no apostrophe is yours unless a person's/object's name was "Your" and you are talking about something belonging to Your, in which case it would be Your's