Reading: The reading part of Jian 3-6 is more in line with the current difficulty and thinking. IELTS reading is generally dominated by newspapers and magazines. So you should read a lot of English newspapers, such as the British Mirror and the Guardian, to understand the expression habits and common expressions of English newspaper articles. Learning books can be divided into 1.2.3 with reference to Liu Hongbo's IELTS reading truth.
IELTS examiner's oral practice guide. This book is written by a senior IELTS test expert, with novel content and clear thinking.
There is also a special IELTS speaking training, Shen Xiaoying's "Breaking through IELTS Speaking in Ten Days".
You can also take a look at Wang Lu's 807 IELTS machine classic-wit, which is an upgraded version of wit and argument examiner: practical IELTS speaking.
Writing: first of all, you must carefully read the writing examples behind Jane, sum up some good sentences and ideas with your heart, and apply them to your own writing; You should also read the low-grade composition, because you can see what the low-grade composition looks like and how to avoid it.
In addition, IELTS writing edited by Mark Morgan is also a good choice. You can learn the views of native speakers on writing and find the root of writing. However, the writing of function books should be supplemented by textbooks written by domestic teachers, because the writing ideas of native speakers are still difficult to imitate.
Writing IELTS in Ten Days is a popular writing textbook at present. The content is easy to arrange and divided by day, which can help you arrange your review plan reasonably.
There are not many books, and it is wise to eat them thoroughly. Don't try to cover all the books on the market, the key is to find the really useful books and read them thoroughly. I hope my answer can help you! Good luck!