汉语中的“查字典”，说成英语通常是look up sth in a dictionary或consult [refer to] a dictionary。如：

You can look the word up in the dictionary. 你可以在词典里查这个词。

I refer to the dictionary frequently. 我经常查阅词典。

He often consulted a dictionary when he read the book. 他读这本书时经常查字典。

有不少人认为不能直接说 look up the dictionary, 其实这种表达在现代英语中也可以用，请看以下摘自权威词书的实例：

I spend more time looking up the dictionary than reading the book. 我读这本书时查字典的时间还多些。

Look up the dictionary and explain the meaning of the italicized words. 查字典然后解释斜体词的意思。

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■ 本文摘自《中学英语高频词详解词典》■