danger的形容词是dangerous。danger作为名词，基本含义为“危险”、“风险”、“可能性”、“危险因素”、“威胁”、“危险的人”；dangerous作为形容词，基本含义为“危险的”、“引起危险的”、“不安全的”。

danger作为名词，是可数名词，意为危险;风险;(坏事或不快之事发生的)可能性;危险的人;危险因素;危害;威胁。

例句：Children's lives are in danger every time they cross this road.

孩子们每次过这条马路都面临着生命危险。

There is no danger of a bush fire now.

目前不存在野外大火的危险。

Smoking is a serious danger to health.

吸烟严重危害健康。

Police said the man was a danger to the public.

警方说该名男子对公众是个危险。

My friends endured tremendous danger in order to help me...

为了帮助我，朋友们冒了极大的危险。

There is a real danger that some people will no longer be able to afford insurance...

一些人很可能再也负担不起保险了。

There is a danger of becoming too dogmatic about teaching methods.

在教学方法上存在着过分教条主义的危险。

I must have been blind not to realize the danger we were in.

当时我一定是眼瞎了，竟然没有意识到我们所处的危险。

People are becoming more sensitized to the dangers threatening the environment.

人们对危害环境的各种因素有越来越强的意识。

Children need to be educated on the dangers of drug-taking.

有必要对儿童进行吸毒危害的教育。

dangerous作为形容词，意为危险的;引起危险的;不安全的。

例句：The traffic here is very dangerous for children.

这里的交通对孩子很危险。

It would be dangerous for you to stay here.

你待在这儿不安全。

It's a dangerous stretch of road.

那段路很不安全。

I need hardly tell you that the work is dangerous.

这工作很危险，这就不用我说了。

Seriously though, it could be really dangerous.

不过说实在的，这事说不好真的很危险。

In those days, the trip across country was a dangerous undertaking.

那个时期，越野旅行是一件危险的事情。

The campaign is trying to get the message across to young people that drugs are dangerous.

这次运动旨在让年轻人懂得毒品的危害。

It's a great place for swimming, but beware dangerous currents.

那是个游泳的好去处，但要当心危险的水流。

It is dangerous to exceed the recommended dose.

超过建议使用的剂量会有危险。

The drug is not harmful per se, but is dangerous when taken with alcohol.

这种药本身无害，但与酒同服就危险了。

He was hauled up before the local magistrates for dangerous driving.

他因危险驾驶而被移交地方法庭审判。