the pronunciation of 's (apostrophe s ) ?

[japanjapan]

Dear teachers,
I have been puzzled by the question for a very long time.
Let's assume that the following words are all people's names.
Jack, Jat, Jass, Jaz,

1. This is Jack's book.
2. This is Jat's book.
3. This is Jass's book.
4. This is Jaz's book.
5. This is my teacher's book.
6. These are our teachers' books.

How to pronunce those red parts?
Now I read them as /ks/, /ts/, /siz/, /ziz/, /z/, /z/.
Am I right?
I doubt these because I often hear "'s" is pronunced as "/s/", even in the 5th and the 6th sentence. ( I think in the last two sentences, it should be pronunced as /z/)
So, are there any rules?
thanks.

[Tdol]

1. This is Jack's book. /ks/
2. This is Jat's book. /ts/
3. This is Jass's book./siz/
4. This is Jaz's book./ziz/
5. This is my teacher's book./z/
6. These are our teachers' books./z/

How to pronunce those red parts?
Now I read them as /ks/, /ts/, /siz/, /ziz/, /z/, /z/.
Am I right? Yes, you are
I doubt these because I often hear "'s" is pronunced as "/s/", even in the 5th and the 6th sentence. ( I think in the last two sentences, it should be pronunced as /z/)
So, are there any rules?

Where do you here the /s/ sound? I don't hear it here in the UK.

[Casiopea]

5. This is my teacher's book.
6. These are our teachers' books.

It's pronounced as [z] by native speakers; however, some speakers, especially non-native speakers, might pronounce the s in teacher's as [s] because of a sound process called progressive assimilation.

In antcipating the voiceless quality of ch, an affricate in the word teacher's, a speaker might carry over that voiceless quality to s because s is a fricative, and fricatives share similarities with affricates.

teacher'[s] (non-native pronunciation)
teacher'[z] (native pronunciation

All the best,

[shane]

Cas, is there anything you don't know? :D

We're not worthy </Wayne's World> :wink:

[Tdol]

We must try to find an area of language she isn't an expert on. Unlikely, I admit.

[shane]

We must try to find an area of language she isn't an expert on. Unlikely, I admit.

I wonder what her Klingon skills are like. ;)

[Casiopea]

We must try to find an area of language she isn't an expert on. Unlikely, I admit.

I wonder what her Klingon skills are like. ;)

nuqneH,

nuqjatlh? jIyajbe' t1hIngan Ho.
peDoghQo'.

Click Here to Learn Klingon in 7 easy Lessons :wink:

I know only what I know. There's a great deal I don't know and that's why I visit this Forum. You guys are great teachers. Thank you for that. :D

[shane]

nuqneH,

nuqjatlh? jIyajbe' t1hIngan Ho.
peDoghQo'.

Click Here to Learn Klingon in 7 easy Lessons :wink:

I know only what I know. There's a great deal I don't know and that's why I visit this Forum. You guys are great teachers. Thank you for that. :D

*Runs away to find another challenge* :wink:

[Tdol]

What does one do when one has mastered Klingon?

[MikeNewYork]

What does one do when one has mastered Klingon?

One moves to Kling. :wink: