1. each可作代詞和形容詞,而every只能用作形容詞,如可以說each of these dictionaries或each one of these dictionaries, 但不能說every of these dictionaries, 該用every one of these dictionaries.
    2. each可指兩個(gè)或兩個(gè)以上中間的每一個(gè),而every只可指三個(gè)或三個(gè)以上中間的每一個(gè),不能指兩個(gè)中每一個(gè).如： 可以說each of my eyes, 不可說every one of my eye但可說every one of my toes(腳趾) .
    3. each通常用來指若干固定數(shù)目中的每一個(gè),而every往往指“任何一個(gè)”如：Each girl sitting over there is my student. “坐在那里的每一女孩子”指若干固定數(shù)目中的每一個(gè),故用each.Every man must do his best. “人人都盡的努力”泛指任何一個(gè)人,因而用every.
    4. every和not連用,即“every…not”或“not…every”構(gòu)成部分否定,表示“并非每一個(gè)”的意思,each則無此結(jié)構(gòu).
    5. every+ 基數(shù)詞+ 復(fù)數(shù)名詞=every+ 序數(shù)詞+ 單數(shù)名詞,作“每(多少)”解,但each不能用于這一結(jié)構(gòu)中. 如： every three days 每三天或每隔兩天,相當(dāng)于 every third day.
    6. every two days, every second day都作“每隔一天”解,但在實(shí)際應(yīng)用中人們都用every other day來表示這一意思,every two days也有人講,而every second day則少用的.
    7. 也可以說every few days, 相當(dāng)于漢語的“隔些日子”.
    8. each 可以與other構(gòu)成固定的搭配,即each other意思為“彼此、相互、互相”的意思,而every則不能.