楼主您好!您的理解是正确的。because of后加词组或短语,如:because of my good friend,,I can learn English quickly acconding to his help。because后加完整的句子,又如:because my friend is very good,I can learn English quickly acconding to his help。(但是请楼主务必注意:because和so不能同时使用) 望楼主学习快乐!
正确