介词短语做的成分

介词和它的宾语构成介词词组,在句中作状语,表语,补语,定语或介词宾语
Excessive drinking did harm to his health.
celebrities are models for common people
这边2个都是状语
英语中,修饰动词、形容词、副词等的句子成分叫状语（adverbial).
状语的功用：状语说明地点、时间、原因、目的、结果、条件、方向、程度、方式和伴随状况等.
状语一般由副词、介词短语、分词和分词短语、不定式或相当于副词的词或短语来担当.其位置一般放在句末,但也可放在句首或句中.
1.副词一般在句子中做状语．
He speaks English very well.他英语说得非常好.
He is playing under the tree.中的under the tree(地点状语)
2.不定式在句子中可以作目的状语.
I come specially to see you.我专门来看你.
3.介词短语
Ten years ago,She began to live in Dalian.
The boy was praised for his bravery.
4.从句作状语
When she was 12 years old,she began to live in Dalian.
If I am not busy tomorrow,I will play football with you.
5.分词作状语
Having had a quarrel with his wife,he left home in a bad temper.
Inhibited in one direction,it now seems that the Mississippi is about to take another.