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Posted by mmhoul (U3052148) on Tuesday, 13th November 2012
please, Is it what are your (brothers and sisters' OR bothers' and sisters') names? one or two apostrophes? thanks a lot
Posted by domhnull (U2185848) on Tuesday, 13th November 2012
Posted by TheParser (U15332113) on Wednesday, 14th November 2012
***** NOT A TEACHER *****
This is how I understand it.
(1) Let's say (for example) that Tom has 2 sisters and 2 brothers. Let's say that they all contribute money to buy ONE car that they will share.
If that is the case, you would ask Tom: Does your sisters and brothers' car go fast? (one apostrophe. The one car belongs to one group of people)
(2) Usually, however, you would say something like this:
My sisters' and brothers' carS are very fast. (Two apostrophes)
That is: My sisters' cars are very fast, and my brothers' cars are very fast.
The rule also applies if you have only one sister and one brother:
My sister and brother's car is fast. (The two persons own one car together.)
My sister's and brother's carS are fast. (Each person owns a car.)
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