When you stress something and then you go down at the end, like, so if I'm like talking to you now, Lucy, I'm like hello and thank you for tying my tie.
And that is perhaps what the article you read was referring to when it said that the accent grates on them a little bit. - Yeah, coz we tend to end on a minor note, we go down.
Turner says adding or taking away just a little water will change the sound. Adding water to a glass will make a lower sound. The smaller bowls of water produce a higher sound, while the larger ones produce a lower, deeper sound.
So, if I try to do that now, while I'm talking, then what it suggests to you, is that I haven't quite finished yet, and you'll know when I'm finished, because I'm gonna use this downward inflection, and it falls.
So at the very end of this sentence, " because I needed to catch a flight" , " catch a flight" , we're going down at the end because we want to show that listener that we've finished speaking.
所以这句话最后,because I needed to catch a flight,catch a flight,我们最后是降调,因为我们想向听者展示我们已经说完了。