宾语
宾语是指一个动作(动词)的接受者,分为直接宾语和间接宾语两大类,直接宾语指动作的直接对象,间接宾语说明动作的非直接,但受动作影响的对象。一般而言,及物动词后面最少要有一个宾语,而该宾语通常为直接宾语,有些及物动词要求两个宾语,则这两个宾语通常一个为直接宾语,另一个为间接宾语。
①He didn't say anything.
②We sent him a letter.
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.
状语
状语是谓语里的另一个附加成分,从情况、时间、处所,方式、条件、对象,肯定、否定、范围和程度等方面对谓语中心(或者整个句子)进行修饰或限制。
①In a way, any hypothesis is a leap into the unknown.
②It extends the scientist's thinking beyond the known facts.