keeping a diary in english does a great deal of good to my english study. keeping a diary can help you review all the english knowledge you have learned. for example， you must know the correct spelling of each word needed in the diary； you must use the phrases correctly and choose the suitable sentence patterns， meanwhile， it is also necessary to use you knowledge of grammar in a correct way.keeping a diary can help you not only to console your knowledge of english， but to form the habit of thinking in english. practice makes perfect. by and by， your english writing will be greatly improved.