1
a poor boy
使用不定冠词表示一个。
He ordered a poor boy for lunch.
他午餐点了一个大三明治。
大三明治
先理解核心含义，再看它在真实句子里的用法。
大三明治
a large sandwich, cut open and filled with meat, cheese, vegetables, etc.
He ordered a poor boy for lunch.
他午餐点了一个大三明治。
穷小子；贫穷的男孩
Used other than figuratively or idiomatically: see poor, boy: especially, an impoverished male child.
I ordered a poor boy with roast beef and cheese from the corner deli.
我从街角熟食店点了一个夹烤牛肉和奶酪的大三明治。
We bought two poor boys and ate them by the river.
我们买了两个大三明治，在河边吃了。
The poor boy at that restaurant is so big that you can share it.
那家餐厅的大三明治非常大，你可以和别人分着吃。
使用不定冠词表示一个。
He ordered a poor boy for lunch.
他午餐点了一个大三明治。
作定语修饰sandwich。
The menu lists a poor boy sandwich.
菜单上列有大三明治。
order后接食物名称。
I'll order a poor boy with roast beef.
我要点一个烤牛肉大三明治。
用with表示配料。
She asked for a poor boy with extra cheese.
她要了一个加额外奶酪的大三明治。
Not this
The poor boy is very tasty.
Use this
The poor boy sandwich is very tasty.
这个句子中“poor boy”本身是“大三明治”的意思，但这里误将其理解为“可怜的男孩”。英语中“poor boy”作为三明治名称时，通常需要加上“sandwich”来避免歧义，或者通过上下文明确表示它是一种食物。
Not this
I want to eat poor boy for dinner.
Use this
I want to eat a poor boy for dinner.
“poor boy”是可数名词短语，指一种三明治。在英语中，单数可数名词前通常需要加冠词（a/an或the）。中文没有冠词，学习者容易遗漏，但英语中必须使用不定冠词“a”表示“一个”。
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Use poor boy naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.