介詞和它的賓語構(gòu)成介詞詞組,在句中作狀語,表語,補(bǔ)語,定語或介詞賓語
Excessive drinking did harm to his health.
celebrities are models for common people
這邊2個(gè)都是狀語
英語中,修飾動(dòng)詞、形容詞、副詞等的句子成分叫狀語（adverbial).
狀語的功用：狀語說明地點(diǎn)、時(shí)間、原因、目的、結(jié)果、條件、方向、程度、方式和伴隨狀況等.
狀語一般由副詞、介詞短語、分詞和分詞短語、不定式或相當(dāng)于副詞的詞或短語來擔(dān)當(dāng).其位置一般放在句末,但也可放在句首或句中.
1.副詞一般在句子中做狀語．
He speaks English very well.他英語說得非常好.
He is playing under the tree.中的under the tree(地點(diǎn)狀語)
2.不定式在句子中可以作目的狀語.
I come specially to see you.我專門來看你.
3.介詞短語
Ten years ago,She began to live in Dalian.
The boy was praised for his bravery.
4.從句作狀語
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.分詞作狀語
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.