???［误］Everyone of us should do housework two hours a day.［正］Every one of us should do housework two hours a day.［析］everyone不可与of结构相连接使用，而every one则可以这样用。???［误］I should read English everyday.［正］I should read English every day.［析］要注意的是every day是“每天”，而everyday则是形容词为“日常的”。如：everyday English日常英语，everyday life日常生活。???［误］There are trees on every sides of the street.［正］There are trees on each side of the street. ［析］every用于三者或三者以上的每一个，而each用于二者或二者以上的每一个。因为街道只有两侧，所以只能用each而不能用every.???［误］All my parents are engineers.［正］Both my parents are engineers.［析］all用于三者或三者以上的全部，而both 则用于两者的全部。