Hi Wanyu Li, Grammar is also very difficult when learning another language, especially if it has a different origin from your own. From looking at the paragraph you have written I would say the key thing to learn would be basic noun+verb rules in English. For example '...my grammar always wrong' : GRAMMAR is the noun however there is no verb so the sentence doesn't make sense. Therefore it should be '...my grammar IS always wrong' '...mistakes just can't avoid': Here you have CAN'T which is the verb but no noun so we don't know who you are referring to. It should be '...I just can't avoid (making) mistakes' All in all just make sure every sentence or subclause has a noun and a verb related to each other (obviously there are always exceptions to the rule but its a good start). I hope this helps :)

Well, it depends on what you want to use your writing skills for. Unless you plan on writing professional works that require highly formal and professional writing, there's really no point in developing your writing skills any differently than your speaking skills. Just write how you speak. As you read and listen to more English, your speaking will improve, and then so will your writing.