She was feeling stressed after a bad day at work. 她工作一天后很不顺心，感到精神紧张。

I'm afraid I have some bad news for you. 恐怕我有些坏消息要告诉你。

a bad dream 恶梦

For people living alone, Christmas is often the worst time of the year. 对于独居者来说，圣诞节常常是一年中最难熬的日子。

Police used tear gas, but that just made the situation worse. 警察使用了催泪瓦斯，但那只是使情况变得更加糟糕。

It was the worst scandal of the Clinton presidency. 这是克林顿总统任期中最糟糕的丑闻。

In the second half of the game, things went from bad to worse. 在下半场比赛中情况变得越来越糟。

bad management/workmanship 差劲的管理/工艺

The show was so bad they took it off after two episodes. 该节目质量太差，播出两集后他们就不播了。

You've been given bad advice. 你得到的是坏建议。

I can come back later if this is a bad time for you. 如果现在你不方便，我可以以后再来。

You shouldn't try these exercises if you have a bad heart. 如果你有心脏病，你就不应该尝试这些运动。

It will go bad if you don't put it in the refrigerator. 如果不把它放进冰箱，它就会变质。