The grammar points covered in the book are not in order of difficulty, so you can go straight to the parts where you need most practice.
本书所含的语法点并不是按难易程度排列的，所以你可以直接跳到你最需做的练习部分。
The grammar points covered in the book are not in order of difficulty, so you can go straight to the parts where you need most practice.
本书所含的语法点并不是按难易程度排列的，所以你可以直接跳到你最需做的练习部分。
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