a piece of用法 复数在哪加s 举列

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apieceof用法复数在哪加s举列apieceof用法复数在哪加s举列apieceof用法复数在哪加s举列apieceof+单数piecesof+复数Thereisapieceofpaper.The

a piece of用法 复数在哪加s 举列
a piece of用法 复数在哪加s 举列

a piece of用法 复数在哪加s 举列

a piece of+单数
pieces of+复数
There is a piece of paper.
There are pieces of paper.

a piece of+单数
pieces of+复数
There is a piece of paper.
There are pieces of paper.

he give me a piece of advice.
他给我一条建议。
加piece后面
因为这种量词后面主要是修饰不可数名词,而不可数名词后不可加s
如同
three pieces of bread
三片面包

A piece of短语后面可以跟不可数名词,整个短语再变复数时,只能将piece变为复数。例子:
a piece of paper (不可数名词paper)
two pieces of paper
a piece of chalk (不可数名词chalk)
three pieces of chalk