Why can't I practice English pronunciation and intonation? What should I do? Is the tone all natural? I was laughed at for speaking English today!

First of all, don't be afraid of others laughing at you. Since you want to practice well, don't care about other people's laughter.

There are some reasons for poor pronunciation and intonation, but it is not without good possibilities.

Phonetic intonation can be associated with phonetic symbols. I read and remember words according to phonetic symbols, which are very important.

Also, I suggest that you keep listening to English tapes for an hour every morning and do other things while listening.

Besides listening, you should practice, so that you can have a sense of language. Of course, if you have the opportunity to meet foreigners, you can try to talk.

As long as you are willing to practice, listen and endure hardships, you will be able to practice well. Besides, be confident.