翻译句子：不要害怕在课堂上犯错.它可以帮助你进步.

of making mistakes 或者 to make mistakes
只有be afraid to do sth 和 be afraid of sth/doing sth
be afraid to do sth,不敢去做某事
be afraid of doing sth,一向害怕做某事,表示习惯.