pen是可数名词。
pen：
n.笔;钢笔;圈;围栏;畜栏。
vt.写;(把…)关起来，圈起来。
第三人称单数： pens.
复数： pens.
现在分词： penning.
过去式： penned.
过去分词： penned
扩展资料
Go and get me a pen please.
请你去给我拿支钢笔来。
I could hear his pen scraping across the paper.
我听得见他的'钢笔在纸上沙沙地响。
At the stroke of a pen they removed thousands of people from the welfare system.
他们大笔一挥，就把成千上万的人排除在福利制度之外。
None of these pens works/ work.
这些钢笔没有一支能用。
She reached inside her bag for a pen.
她把手伸到包里掏钢笔。
