To pass JLPT N2, its really important to have a deep understanding of basic grammar. But how do you review the grammar you've learned?

To do so, I recommend 「 短期集中初級日本語文法総まとめ ポイント20」. This reference book is not for beginners as the explanation might be too difficult for them. However, if you use this book after you have learned some basic grammar in class , this book will be easy-to-use and handy. 

This book consists of basic grammar, for example 1課　助詞　2課　「は」と「が」　4課 「て形」・「た形」　5課　動詞の活用と文型　6課　ふつう形　8課　申し出・勧誘　　11課　～ていく・～てくる　12課　他動詞と自動詞　13課　可能表現　15課　条件など　16課　授受　だれがだれに？　17課　使役　18課　受身・使役受身　19課　敬語　

It may seem a bit too much, but if you are taking JLPT N2 and feel nervous about the exam, before you sit for the exam, get a deeper understanding of basic grammar by this book!