1.【语意表述】当某事情要出现麻烦了的时候.......。

【句型模板】WhenThe balloon goes up, ...

【指点迷津】此句型是来源于习语when the bal`loon goes up。它是非正式书面用语，常用语口语中，意思是：when expected trouble begins 。是指“当意料中的麻烦到来时”。根据不同的语境，可以翻译为(行动、战争、事件、骚动等)开始，发动。

【典型范例1】I don't want to be around when the balloon goes up.

要出事了, 我趁早离开是非之地。

【典型范例2】The international rules of war are apt to be waived when the balloon goes up.

仗一打起来，国际战争规则就容易被放弃。

【典型范例3】Humanitarianism is apt to be forgotten when the balloon goes up.

一旦战争爆发，人道主义往往就被抛到脑后了。

【句型出处】My dear Papa thought the balloon would go up in the 1880s.（十九世纪晚期，我父亲以为家业会付之东流。）

2. 【语意表述】某物或某人处于危险之中。

【句型模板】Something or somebody is in danger.

【指点迷津】此句型用到in danger这个借此短语，意思是“处于危险中”。

【句型操练1】The people are in danger; we must help them off.

人们处境危险，我们必须帮助他们离开。

【句型操练2】The dam was in danger because of the rising flood.

洪水猛涨，大坝告急。

【句型出处】Was it ever in danger?（它曾身陷险境。）

【句型拓展】Somebody is in danger of something( or doing something).

（某人处于......的危险之中。）

【典型例句1】At one point he was in danger of being lynched.

他一度险些被人以私刑杀害。

【典型例句2】Don't apply for that job: you're in danger of overreaching yourself.

不要申请那份工作，以免有不自量力之嫌。