实战口语情景对话 第930期:Reasons for Riots 骚乱原因

重点讲解：
1. on alert 处于警戒状态；保持戒备；
例句：Security forces were placed on alert.
治安警备力量进入了警戒状态。
2. turn over (使)翻转；(使)颠倒；(使)倾覆；
例句：Liz picked up the blue envelope and turned it over curiously.
莉兹拿起蓝色信封，好奇地翻过来看。
3. to be honest 老实说；说实在的；
例句：To be honest, I have stopped reading papers for years now.
实话说，我已经好几年不看报纸了。
4. under threat 受到威胁；
例句：The biologist believes that some animal species are under threat of extinction.
那位生物学家相信某些动物物种正受到灭绝的威胁。
5. even though 即使；尽管；纵然；
例句：I don't like spinach even though I know it's good for me.
我不喜欢吃菠菜，虽然我知道它对我有好处。