英语书用英语可写为：English book 或 an English book，一般不能说成a book of English。
book
n.书;书籍;印刷(或电子)出版物;著作;本子;簿子
What they want is a good English book.
他们想要的是一本好的英语书籍。
I don't think it is her English book.
我认为那不是她的英语书。
Yesterday, we went to buy some new English book.
我们买些新英语书。
He brings his English book to school every day.
他每天都把他的英语书拿到学校来。
Each one has got an English book.
人人都拿到了英语书。
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