主从复合句
含有两套或更多的主谓结构,其中有一个是主要的主谓结构,其他主谓结构从属于它并且担任起句子成分。
①They believe that the computer will finally take the place of human beings.
②He asked me where he could get such medicine.
定语从句
在主从复合句中,对名词(或者整个句子)限定修饰,起定语作用的句子,就是定语从句。
①They rushed over to help the man whose car had broken down.
②The school that he once studied in is very famous.
主句
主从复合句中的主干句子,能单独使用或出现的句子。
①They believe that the computer will finally take the place of human beings.
②He asked me where he could get such medicine.
插入语
在一个句子中间插入的一个成分,不作句子的何种成分,也不和句子的何种成分发生结构关系,同时既不起连接作用,也不表示语气,这样的成分是插入语。
①One advantage of his icebox, Moore explained, was something.
②The success of the Colorado beetle in infesting potatoes, for example, seems to be correlated with its high tolerance to alkaloids.
定语
定语是用来修饰、限定、说明名词或代词的品质与特征的成分。
①In science, a theory is a reasonable explanation of observed events.
②Possible solutions to the problem are formulated.
同位语
一个名词(或其它形式)对另一个名词或代词进行修饰,限定或说明,这个名词(或其它形式)就是同位语。
①A new household convenience, the icebox, a precursor of the modern refrigerator, had been invented.
②Most of them range in size from $5,000 to $12,500, a welcome sum to many young practitioners.
谓语
谓语对主语动作或状态的陈述或说明,指出“做什么”、“是什么”或“怎么样”。
①It is used by travelers and business people all over the world.
②I made your birthday cake last night.
主语
主语是句子陈述的对象,说明是谁或什么,表示句子说的是"什么人"或"什么事"。
①My school is not far from my house.
②To do such a job needs more knowledge.