“语法书”造句

与其说这是本语法书,倒不如说是一本词典.
The book seems to be more a dictionary than one on grammar.

严格说来; 那不是一本词典, 而是一本语法书.
That is not, properly speaking, a dictionary, but a grammar.

我在写现代英语的语法书.
I'm writing a grammar of modern English.