e.g.The government has done a lot to protect the water from polluting in recent years.
近年来，政府做了大量的事情为了保护水受到污染。 product n. 产品；制品
e.g.Try to get the best product at the lowest price. 尽量以最低的价格买到最好的产品。 We are all products of our time. 我们都是这个时代的产物。 三、语法点拨：名词性物主代词
物主代词有形容词性和名词性两种，形容词性的物主代词属于限定词。名词性物主代词起名词的作用。
单数形式：mine，yours，his/hers/its 复数形式：ours，yours，theirs 名词性物主代词=形容词性物主代词+名词
My bag is yellow, hers（=her bag）is red，his（=his bag）is blue and yours（=your bag）is pink. 名词性物主代词的功能： 1．作主语
e.g.May I use your pen？ Yours works better. 我可以用一用你的钢笔吗？你的笔比我的好用。 2．作宾语
e.g.I love my motherland as much as you love yours. 我爱我的祖国就像你爱你的祖国一样深。 3．作介词宾语
e.g.You should interpret what I said in my sense of the word, not in yours.
你应当按我所用的词义去解释我说的话，而不能按你自己的意义去解释。 4．作主语补语
e.g.This book is mine. (mine带有“我的书”的意思)。 This book belongs to me.
物主代词可用下面的表格来总结记忆。
主格 名词性物主代词 形容词性物主代词 I mine my he his his she hers her you yours your it its its we ours our they their theirs
