IBT新托福重点词汇之threaten

 　　1)v

　　[Tn, Tn.pr] ~ sb (with sth) make a threat or threats against sb;try to influence sb by threats 恐吓或威胁某人: threaten an employee with dismissal 以开除要挟雇员

　　例：My attacker threatened me with a gun. 攻击我的人用枪威胁我.

　　[Tn, Tt] use (sth) as a threat 用(某事)相要挟: He threatened legal action. 他以起诉相要挟.

　　例：The hijackers threatened to kill all the passengers if their demands were not met. 劫机者扬言若不满足他们的要求, 就把乘客都杀死.

　　(a) [It, Tn] give warning of (sth) 预示(某事): It keeps threatening to snow, ie Snow seems likely all the time. 天总像是要下雪.

　　例：The clouds threatened rain. 有乌云预示要下雨.

　　(b) [I, It] seem likely to occur or to do sth undesirable¹ 似将发生;似将做出令人不快的事: under a threatening sky 在阴沉的天空下

　　例：If a gale² threatens, do not go to sea. 假若要起风, 就不要出海.

　　例：a mistake that threatens to be costly³ 可能造成重大损失的错误.

　　[Tn] be a threat to (sb/sth) 对(某人[某事])构成威胁: the dangers that threaten us 威胁着我们的种种危险

　　例：a species threatened by/with extinction⁴ 有灭绝之虞的物种.

　　2)threateningly

　　adv: The dog growled⁵ at me threateningly.那条狗对着我狂吠, 很吓人.

1 undesirable   

adj.不受欢迎的，不良的，不合意的，讨厌的；n.不受欢迎的人，不良分子

参考例句：

• They are the undesirable elements among the employees.他们是雇员中的不良分子。
• Certain chemicals can induce undesirable changes in the nervous system.有些化学物质能在神经系统中引起不良变化。

2 gale   

n.大风，强风，一阵闹声（尤指笑声等）

参考例句：

• We got our roof blown off in the gale last night.昨夜的大风把我们的房顶给掀掉了。
• According to the weather forecast,there will be a gale tomorrow.据气象台预报，明天有大风。

3 costly   

adj.昂贵的，价值高的，豪华的

参考例句：

• It must be very costly to keep up a house like this.维修这么一幢房子一定很昂贵。
• This dictionary is very useful,only it is a bit costly.这本词典很有用，左不过贵了些。

4 extinction   

n.熄灭，消亡，消灭，灭绝，绝种

参考例句：

• The plant is now in danger of extinction.这种植物现在有绝种的危险。
• The island's way of life is doomed to extinction.这个岛上的生活方式注定要消失。

5 growled   

v.（动物）发狺狺声， （雷）作隆隆声( growl的过去式和过去分词 )；低声咆哮着说

参考例句：

• \"They ought to be birched, \" growled the old man. 老人咆哮道：“他们应受到鞭打。” 来自《简明英汉词典》
• He growled out an answer. 他低声威胁着回答。 来自《简明英汉词典》