Pronunciation: Assimilation of /d/ to /g/

Tim's back in his pronunciation workshop. This time he's finding out what happens to a /d/ sound when it is followed by a /g/ or a /k/.

Transcript:
Tim
Hi. I'm Tim and this is my Pronunciation workshop. Here I'm going to show you how English is really spoken. Come on, let's go inside.
In English, we have an expression – man’s best friend. Do you know what that refers to?

Voice
Beer?!

Tim
No, not beer. Dogs. A dog is man’s best friend. But not always. What would you say to a dog who did this?

Voxpops
Bad girl!
She's a bad girl!
The dog has been a bad girl!

Tim
Now, the word bad ends in the sound /d/, doesn’t it? Or does it? Watch and listen again. Can you hear the /d/?

Voxpops
Bad girl!
She's a bad girl!
The dog has been a bad girl!

Tim
In fluent speech, a /d/ changes to a /g/ when it comes before a /g/ or a /k/. So /bad girl/ becomes /bagirl/. This is an example of assimilation. And here are some more examples.

Examples
He’s a really good cook.
Last night we had guests for dinner.
Can you print out the hard copy?
I'd love to walk down the red carpet one day.

Tim
Right, so you’ve heard some examples, now it’s your turn. You know the drill: Listen and repeat.

Examples
He’s a really good cook.
Last night we had guests for dinner.
Can you print out the hard copy?
I'd love to walk down the red carpet one day.

Tim
Well done. Now remember, if you want to learn more about pronunciation, then please visit our website, bbclearningenglish dot com. And that is about it from the workshop for now. I'll see you soon. Bye! Now, you know what, I’m not really that keen on dogs, I’m more of a cat person. Oh no, no, no that was just a joke - good girl, good girl, aaah! Oh, very funny. You're actually quite cute. Who's a good girl? Who's a good girl? Argh! Bad girl!

[jin]

This workshop helps me improve my pronunciation a lot. Thanks!

[all-right]

I think there is something wrong with the explanation in 1:12. The sound "d" disappears - it does't change to "g" sound. If it was, "red carpet" would not be pronounced as "re'kapət".

[hectoralfonsodepaz]

his workshop helps me improve my pronunciation a lot. Thanks

[laldin]

Really helpful...Tim has an high eclectic approach of teaching pronunciation! Really impressed!

[nicktrevi]

Still wondering why nobody teaches the fluent speech patterns at school. Do they keep it under wraps on purpose?

[yuwang]

He is a really good cook.Are you sure the d will change to g?It seems that the d changed to k.

[popofish]

he's wearing the same shirt for every episode 😹

[lauraelenamuneratti]

You are so funny jajaja I learn a lot with you while passing a good time too thanks

[mrmma]

I've watched the video 3 times before I wrote it down.
I don't get it, the ending of " Good" or whatever change it " Goog" or becomes silent and then you will just pronounce the next word begins g or k:
Example:
Good girl = Goo girl ( fast pace )
Could anyone clear this up?

[khinpannnyeinpyone]

Thanks a million. It's really helpful.

[armelleb]

Very clear, and very instructive. Thank you !

[TekinBursal]

I appreciate your efforts on preparing this video :)

[jalilkarbalai]

This is a great video so I'm learning a lot of

[chunlisun]

it's really helpful. Thank you !

[jerusalenestudillo]

Bad joke but you made it really funny! 😁 Thank you for your lessons!

[institutopringleschoolofen]

I would like moooreee!!!! ...it is great

[dehilisfatima]

well, thank u but what about coalescence, regressive & progressive assimilation .

[최진규-gd]

would you somebody help me! I don`t know how to pronounce of "print out". I`m hearing like "prin ta". That alright?

[AmaanKhan-mtoh]

Hey!
I, m doing my masters in English Literature but I need a person who have a grip on English.Anyone help me😇