句子所有成分：
- 主干成分：主语、谓语、宾语、谓语
- 修饰成分：同位语、定语、状语、
补语
举例一
- My ma is an elegant lady. 形容词修饰名词
- My ma is a lady of elegance. 名词修饰名词
- My ma is a lady as elegant as a lily. 介词短语修饰名词
- My ma is a lady looking as elegant as a lily. 非谓语动词修饰名词
- My ma is a lady who looks as elegant as a lily. 从句修饰名词
举例二
- She killed her husband with a sharp knife. 介词短语作状语
- She, applying a sharp knife, killed her husband. 非谓语动词作状语
- When she applied a sharp knife, She killed her husband. 从句作状语
举例三
主语从句
- (That I met you) is my honor. 从句作主语
- Meeting you is my honor. 非谓语动词作主语
表语从句
- My dream is to pass the examination of postgraduates. 非谓语动词充当表语
- My dream is that I pass the examination of postgraduates. 从句充当表语
英语长难句的模样
（状语），主语（定语/同位语/状语）谓语 宾语（定语/同位语/状语）
English is vital.
English, a universal language throughout the world, is vital although It is hard to recite these words.
-
I will recommend you a tourist attraction.
- I , a university student in this university, will recommend you a tourist attraction which keeps popular with Chinese travelers.
