回答如下:
"介词+ 名词"只是一个
介词短语,不是
定语从句。介词短语在英语句中可以作
表语、定语(置于名词之后)、状语、宾补。例如:
They are in the room. (表语)
He looks like a farmer. (表语)
The girl in a red skirt is an film actress. (定语)
They know the man under the tree. (定语)
He smiled at us in a friendly way. (方式状语)
She works in the hospital. (地点状语)
He passed away at 10: 00 pm. (时间状语)
Man can't live without water. (条件状语)
They went on working in spite of the rain. (让步状语)
I didn't go because of the bad weather. (原因状语)
They came here for help. (目的状语)
To what extent do you love her? (程度状语)
I saw him swim in the river. (宾补)
I found the film tiket out of date. (宾补)
而定语从句则必须有关系代词(who, whom, that, which, whose等。它们在从句中分别作主语、宾语、定语、表语)或
关系副词(when ,where,why等。它们在从句中作时间、地点、原因等状语)引导,定语从句所修饰的词叫
先行词。例如:
He is a doctor who has worked for five years.
The house which / that he lives in is very small.
I know the boy whose father is a teacher.
I will never forget the day when I joined the army.
That is a house where Lu Xun once lived.
That's the reason why he came late.