(表示所说的不计算在内; 除开) except:除了星期日以外,我们每天都上班。 We work every day except Sunday.除了这台拖拉机以外,所有其他的拖拉机质量都很好。 All the tractors except this are good in quality.(表示在什么之外,还有别的) besides; in addition to:除了化学之外,我们还喜欢学习物理。 Besides chemistry we like to study physics.除了铜之外,还有很多其他金属都是良导体。 In addition to copper, there are many other metals which are good conductors.
except; 除了...之外(不包含);例如:Everyone went to the cinema except Tom.除了Tom, 其他人都去了电影院。besides;除了...之外(包含);例如:Besides Tom, anyone else also went to the cinema. 除了Tom 外,其他人也去了电影院。