【词组解析】
1. how about ...怎么样
（1）How about Jack? We can't just leave him here.
他怎么办，我们不能把他留在这儿。
（2）I don't have much know-how about engines.
发动机方面的技术知识我知之甚少。
2. how come 怎么会
（1）How come he got the job?
怎么他会得到这个职位呢？
（2）How come you never visit me any more?
你究竟为什么总不来看我呢？
3. hungry for 渴望
（1）Being hungry for the whole morning, I couldn't help cramming myself.
我饿了一上午，禁不住狼吞虎咽了起来。
（2）We're hungry for news about our brother.
我们渴望得到弟弟的消息。
4. ignorant of 不知道
（1）We are still woefully ignorant of the causes of this disease.
不幸的是，我们仍对这种疾病的致病原因一无所知。
（2）A tiny insect, trying to shake a mighty tree, is ludicrously ignorant of its own weakness.
蚍蜉撼大树，可笑不自量。
5. impatient at sth. 不耐烦
（1）I am getting impatient at having to waIt'so long.
等这么长时间我都不耐烦了。
（2）I was impatient at his delay in answering.
我对他的迟延答覆感到不耐烦。
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