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2022年初中英语不定冠词基本用法

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    不定冠词基本用法
    1.不定冠词表“一” ,意思同“one”
    He has an English book.
    2.用于可数名词单数前泛指人或物的某一类
    My father is a doctor.
    3.第一次提到某物或某人用a或an
    There is a pen on the table and the pen is mine.
    4. 用于序数词前,表“又一、再一”
    He ate one apple, but he wanted a second one.
    Please give me a second chance.
    5. 用于表频率、速度、价格等意义的名词前,“每一”, 相当于every
    fifty meters an hour/three times a day/once a second
    6.泛指某人或某物
    I saw a man under the tree.
    7.习惯用语
    a little/few/bit(一些、一点儿)
    in a word(总之)
    in a moment(立刻)
    as a result(因此)
    half an hour(半小时)
    a moment ago(刚才)
    once upon a time(从前)
    in a loud voice(大声地)
    in a hurry(匆忙地)
    with a smile(微笑着)
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