1、通常的英语：usually 读法：英 [ju????l] 美 [ju?u?l]。
2、我通常在午休时间去健身房。I usually go to the gym during my lunch hour。
3、离婚后通常是母亲拥有孩子的监护权。The mother is usually the custodial parent after a divor。
4、经常的英语：often。英 [??fn] 美 [???fn]。
5、人们经常谈到两者的相似之处。The similarities between the two have often been remarked on。
6、这种疾病经常潜伏多年而不被察觉。The disease often goes/ remains undetected for many years。