Sam had lots of chocolate yesterday, so today he's got a stomach ache.

萨姆昨天吃了许多巧克力，所以今天他胃痛。

Daming had two watermelons yesterday, so today he's got a stomach ache.

大明昨天吃了两个西瓜，所以今天他胃痛。

Amy had a cold yesterday, and today she's got a headache.

埃米昨天感冒了，今天她头痛。

Lingling had a headache yesterday, and today she's got a fever.

玲玲昨天头痛，今天她发烧了。