Also,many flowers grown for their beauty need bees to pollin
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1.many flowers grown for their beauty need bees to pollinate them 的语法结构为——

主句:many flowers need bees to pollinate them 许多花需要蜜蜂给它们授粉.

后置定语:grown for their beauty 为繁育自身美的(花)

2.句中的后置定语是由过去分词短语充当的,也可以把它改为定语从句——

被动语态:which are grown for their beauty (省略其中的关系代词 which 和助动词 are 就回到了原来的过去分词短语) .

3.分词短语常用来作后置定语,如:

* This is a book written by a worker.这是一本工人写的书.

-- 过去分词短语 written by a worker = 定语从句 which is written by a worker.

* He handed me a parcel wrapped up in a an old newspaper.他交给我一包旧报纸抱着的东西.

--过去分词短语 wrapped up in a an old newspaper = 定语从句 which was wrapped up in a an old newspaper.