英语中部分动词的过去式或过去分词以后缀 “-ed” 结尾。在这些动词中，后缀 “-ed” 有三种发音方式。分别是哪三种？应如何判断？看 “一分钟英语” 视频，跟主持人 Phil 学习后缀 “-ed” 在动词中的发音规则。

Did you know these two letters can be pronounced in three different ways? 

They can be /d/, /t/ or /ɪd/. Here's how to find out which.

First, feel your neck. If a sound makes it vibrate like /d/, then it's voiced. If it doesn't like /t/, then it isn't.

Where 'ed' comes after a vowel or a voiced consonant, then pronounce it as /d/, which is a voiced sound. Played, used.

If you have 'ed' after an unvoiced sound, then it sounds like /t/ – an unvoiced sound. Looked, helped.

If you have 't' or 'd', then 'ed' becomes /ɪd/ – it's just easier to say. Wanted, needed.

So, if 'ed' comes after a voiced sound, then it's voiced. If it comes after an unvoiced sound, then it's unvoiced, and if it comes after /t/ or /d/, then it's /ɪd/.

1. 动词以元音或浊辅音结尾时，后缀 “-ed” 读作 /d/。

2. 动词以清音结尾时，后缀 “-ed” 读作 /t/。

3. 动词以 /t/ 或 /d/ 结尾时，后缀 “-ed” 读作 /ɪd/。