The weather is bad today, so we have to cancel our picnic.（今天天气不好，所以我们不得不取消野餐。）

Eating too much junk food is bad for your health.（吃太多垃圾食品对你的健康有害。）

He had a bad headache after staying up late last night.（他昨晚熬夜后头疼得厉害。）

The smell in the kitchen is really bad. Something might be rotten.（厨房里的气味真难闻。

可能有东西腐烂了。）

Her temper was bad because she didn't get enough sleep.（她因为睡眠不足脾气很糟。）

The traffic was bad this morning, and I was late for work.（今天早上交通很糟糕，我上班迟到了。）

This apple has a bad spot. We can't eat it.（这个苹果有个坏点。

我们不能吃它。）

His grades are bad this semester. He needs to study harder.（他这学期的成绩很差。

他需要更努力学习。）

The situation in the city is getting bad due to the heavy rain.（由于暴雨，城市里的情况变得很糟糕。）

That was a bad decision. Now we're in trouble.（那是个糟糕的决定。

现在我们陷入麻烦了。）

The movie I watched last night was really bad. It had a boring plot.（我昨晚看的电影真差。

情节很无聊。）

The shoes I bought are of bad quality. They already have holes.（我买的鞋子质量很差。

已经有洞了。）

He felt bad about forgetting his friend's birthday.（他为忘记朋友的生日而感到愧疚。）

The noise from the construction site is so bad that I can't concentrate.（建筑工地的噪音太大了，我无法集中注意力。）

The team played a bad game and lost by a large margin.（这支球队打得很糟糕，输得很惨。）

The air quality in this area is bad because of pollution.（由于污染，这个地区的空气质量很差。）

She had a bad experience at the dentist's office.（她在牙医诊所经历了不愉快的事。）

The bread has gone bad. It tastes sour.（面包变质了。

尝起来酸酸的。）

His handwriting is so bad that I can hardly read it.（他的字写得太难看了，我几乎看不懂。）

The news he brought was really bad. Everyone was shocked.（他带来的消息真的很糟糕。

每个人都很震惊。）