介词短语在句中能作状语么?

可以
介词短语作状语
A）介词短语作状语，用来修饰动词。
例如：
We live quite near my office.（地点）
Who knows what will happen in the future? （时间）
The sewing machine is worked by foot.（方式）
We're waiting for them to arrive for lunch.（目的）
He worked himself to death.（结果）
He is so useful to me that I can't do without him.（条件）
With all your faults, I still like you.（让步）
He lay on his bed with the sunlight falling on his face.（伴随状语）
I don't believe in dream.（范畴）
What country do you come from?（来源）
Everything depends on whether he is punctual.（根据）
The men who govern the country are chosen by the people.（行为者）
B)介词短语作状语，用来修饰形容词
例如：
He was not conscious of my presence in the room.
I am not interested in doing business with that firm.
They are proud of their clever children.
C）介词短语作状语，修饰副词（比较少用）
例如：
John is now somewhere on the high seas, and we wish him a pleasant holiday.
Do you live here in Middle Town, Mr John?
D）介词短语作状语，修饰整个句子
例如：
On the whole, Jack has been a good friend.

当然了，at home, in the classroom, 地点状语就是最典型的。

可以.
例如：
He is reading in the room.他在房间里读书.
in the room就是介词短语作地点状语.

可以， 还可以做后置定语