It's best to buy a good grammar book, which is the kind you say and practice. Read it before you do it, then ask others if they can, and read it again and take notes. It's better to know what grammar you need to make up, make targeted supplements, and learn from one topic to the next, so that the effect is better! Although grammar has been diluted, you can't learn English well without grammar. If you are a high school student, it is recommended to use high school English grammar. It is the only book that refines senior high school English grammar to grammatical points. Say a test center, and then practice with several real questions of the college entrance examination, which is concise, easy to understand, efficient and practical. The catalogue is very detailed, and you can find the specific test sites. At the same time, it can also improve the ability of correcting mistakes in short passages, filling in grammar and expressing in writing. There are previous versions of electronic manuscripts on the Internet. Jiaxing English Network provides free downloads. This book is updated every year, and now it has been published in version 20 15.