Keeping a diary in English is one of the (effect) ways to improve our English writing ability. (compare) with other forms of writing, it is shorter and takes time. It can help us to develop the habit of thinking in English. we insist in this practice, gradually we'll learn how to express in English. In keeping a diary in English, we certainly come across many (difficult). In the first place, often happens that we have trouble finding proper words and phrases to give expression to our mind. Secondly, there are many idiomatic ways of saying things in Chinese.
As far as I (concern), my suggestion is that we should always have a notebook and a Chinese-English dictionary within easy reach. We can also turn to our English teacher for help, if necessary. In short, I believe that it is great use to keep a diary in English for development of our writing skills.