字典用英语怎么说复数

"Dictionary" 的复数形式是 "dictionaries"。这个复数形式来自英语中的规则转换，即在单词后面加上 "-s"。
例句：
I have three dictionaries on my bookshelf.
我的书架上有三本字典。
She consulted several dictionaries before writing her paper.
她在写论文之前参考了几本字典。
He uses online dictionaries to help him improve his English.
他使用在线字典来帮助提高英语水平。