to do作目的状语和后位定位的区别（另请举几个典型的例子）

A:后位定位
I have something to do (to do 作后位定语修饰something,和something 有逻辑上的动宾关系）
He was the first person to reach the top of the mountain.( to reach the top of the mountain作后位定语修饰the first person,和the first person 有逻辑上的主谓关系）
B.目的状语
I got up early to catch the first bus.这句中的to catch the first bus是目的状语,修饰谓语got up)
He went to the raileay station to meet his friend.这句中的to meet his friend 是目的状语修饰went)
如果不定式前面可以加in order 或者so as （为了,以便） ,那肯定是目的状语
不懂追问*^__^*

I have a lot of homework to do 我有许多家庭作业要做
would you like sth to eat?你要吃点什么/
这两个句子不定式做定语 ，不定式做定语在他们修饰的名词或代词后面
all of us went to see Lucy. to see 是went 的目的
i have to get a job to pay fo...

to do作后位定语时所修饰的名词多为time,work, homework, people 等，经常出现在there be 结构中，以及have, want, need 等的宾语中。例如：He has a lot of work to do every day.作目的状语时前面通常有一个动词或动宾结构。I went out to see what had happened.

不定式做目的状语就是 to do sth作为目的的干某事
定语是修饰限定名词的词或短语，做定语一般后置，就是后位，也就是后置定语
eg: He donated 1000 yuan to help the orphanage. 这里的to do 就是作为一种目的
She spent one day to download his film.
The woman to ...