Of course, now maybe you can't speak fluent English and communicate with simple grammar. In fact, when using English, we don't consider so much grammar, as long as both sides can understand it. Watching some English TV plays shows that the sentences they use are very simple. If you communicate with international students in this way, your oral English will certainly improve, your sense of language will also improve, and your overall English will also improve. As for English abbreviations, they may be commonly used in life. They are represented by abbreviations. Just like Chinese, sometimes there are abbreviations.