A dubbing clip suitable for beginners is reading stories, such as fairy tales or short stories. This kind of clip contains a variety of roles and emotions, allowing beginners to practice different intonations and timbres.
Another dubbing clip suitable for beginners is advertisements, such as TV advertisements or radio advertisements. These fragments are usually short and pithy, and the language is simple and easy to understand, which is convenient for beginners to practice the control of speech speed and volume.
You can also try animation clips to practice dubbing, which usually covers many different roles and emotions, which is very helpful for practicing dubbing.