You can find some information to learn online:
Putonghua learning network
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Last but not least, you can consult your good friends and colleagues who speak Mandarin and communicate with them more. After learning, I will communicate in Mandarin in various public places.
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Experience of learning Putonghua
As a southerner, I am naturally not as good at learning Mandarin as a northerner. It takes a lot of effort to learn it well. Now students begin to learn Mandarin as soon as they enter the campus, and some practice Mandarin since childhood. At that time, we went to primary and secondary schools and had more opportunities for Chinese classes. At other times, we seldom studied and used Mandarin. Specifically, after I entered the normal school, I systematically studied the basic skills of teachers-Putonghua. I really know the usefulness, beauty and arduousness of Mandarin. I was embarrassed, stiff, uneasy and ridiculous when discussing and communicating with my classmates in the north, which left me an indelible memory. For me, learning Mandarin is the most intimate experience. In college, I have more contact with local people than foreigners. I think it's natural for fellow villagers to communicate in dialects, which has a warm feeling and a sense of security, but it limits my thinking development, fetters my inspiration and affects the comparison and optimization between languages. I can have this level today, in addition to my persistent study, I have to thank my friends.
My experience in learning Putonghua is summarized as follows:
1. It took a long time to overcome shyness and anxiety. When talking to people, the most important thing is talking. At first, the other person can't fully understand the voice, and the inexplicable expression on his face often makes you and me embarrassed, and even makes jokes. It seems that his words are intended to make trouble and add jokes, which naturally leads to shyness and anxiety. It took me a long time to get used to and overcome it.
2. There is a great conflict between dialect pronunciation and standard pronunciation, so we should study with a clear aim. We should communicate and talk with foreigners and strangers more, and get into the habit of thinking in Mandarin.
3. There is a gap between habitual pronunciation and Putonghua pronunciation, which is difficult to correct. What has become a habit is often difficult to find by yourself, so be brave enough to talk, exchange experiences more, and be ashamed to ask questions.
4. Putonghua learning is a continuous process that cannot be interrupted. If "two days fishing, three days drying the net" is difficult to learn well.
5. Learn on the basis of listening, reading, reading, analyzing and comparing. This is also a good way to compare other dialects with foreign languages.
6. Be serious, learn with an open mind and keep making progress. Only by loving life, learning from others' strengths and making up for others' shortcomings can we learn something.
The above are some experiences in learning Mandarin. I hope they can help you, and I hope you can get good grades in the Mandarin exam!