panic 的过去式、过去分词和现在分词为什么先加字母k

panic 的过去式、过去分词和现在分词之所以变成panicked—panicked—panicking，要加上字母 k，主要是为了避免发音发生变化，原形中的字母 c 读/k/，如果panic 的过去式、过去分词和现在分词不加k，则变成 paniced—paniced—panicing，根据英语的读音规则，则可能会将字母c误读作/s/。例句如：

Ashley went blue and I panicked. 阿什利脸色发紫，我吓坏了。

People panicked and started hoarding food. 人们惶恐不安，开始贮藏食物。

The civilians panicked when they realized they were under fire. 平民们意识到他们遭到枪击时惊慌失措。

The security men panicked as angry fans charged towards them. 愤怒的球迷冲向他们时，保安人员陷入惊慌之中。

Sara panicked in the exam and didn’t do herself justice. 萨拉在考试中由于紧张未能充分发挥自己的水平。

Organized crime is involved in drug trafficking. 犯罪集团介入了贩毒活动。

People gathered around him and a lot were panicking. 人们聚集在他的周围，许多人惊慌失措。

类似的还有用作动词的 traffic：

traffic 的过去式、过去分词和现在分词也要加k，即变成 trafficked—trafficked—trafficking。作动词的 traffic 意思是“做非法买卖，进行非法交易（如买卖毒品、武器等）”。如：

He was accused of trafficking in stolen works of art. 他被控买卖盗窃艺术品。

He was tried and convicted for trafficking in illegal drugs. 他由于贩卖毒品而被判有罪。

Eight years of effort have hardly put a dent in drug trafficking. 八年的努力并未减少贩毒活动。

We consider drug trafficking to be a menace to the security of our nation. 我们把贩毒视为对国家安全的一个祸害。