如何区分被动语态和后置定语？

Answer 1

英语被动语态是句子中的谓语部分，它必须包含两个部分：be动词和及物动词的过去分词。例如：He was told to give her the story book.

而后置定语是句子中的定语部分，它可以是过去分词短语，现在分词短语，动词不定式，介词短语等，它们在名词后面，并修饰名词，例如：The girl given a book by her brother is my friend.

Answer 2

回答如下：
英语被动语态是英语谓语动词的一种形式，用于说明主语与谓语动词之间的关系。被动语态表示句子主语与谓语动词之间存在被动关系，即主语是谓语动作的承受者。一般来说，只有及物动词才有被动语态。被动语态的基本结构是主语+be动词+过去分词。例如：
He was injured in the leg yesterday.
英语非谓语动词(不定式、动名词、现在分词)也有被动语态，但过去分词没有被动形式，但表示被动意义。例如：
不定式：to be + 过去分词;
动名词：being + 过去分词;
现在分词：being + 过去分词。
The car needs to be repaired.
I am tired of being laughed at.
The house being pulled down now is a clinic.
The man badly injured is a postman.
英语后置定语可以是形容词短语、介词短语、副词、非谓语动词(不定式、动名词、现在分词、过去分词)、定语从句。例如：
The people, both old and young, are planting trees over there.
The tree in front of the house is an apple tree.
We like the children here.
I have a letter to write.
They will build a swimming pool here.
The man standing there is my uncle.
The bridge built last year cost us lots of money.
The house which is being built now is a kindergarten.

Answer 3

被动语态是一个完整的句子，主+be+done的结构；后置定语只起到修饰作用，可以这样区别。

Answer 4

被动语态的结构是be+动词的过去分词
作谓语
如
The car is made in China.
这辆车是中国制造。

过去分词作后置定语（没有be）
如
The car made in China is very good.
这辆中国制造的车非常好。