凤吻凰
幼苗
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use是动词,其他三个是介词.using可当动词性质用,强调用途.例:I opened the door using a key.with强调用什么样的物资.例:They made a temporary rudder with planks.by强调用什么工具,办法,或者什么人.例:He was knocked down by a car.in强调用一种语言,或一些抽象的方式.例:I explained to you in Chinese.
1年前
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