e classroom is very clean.?(讲述:“什么”....)?主语:名词?the classroom ?这间教室很干净。РWe study in No.1 Middle School. ?(讲述“谁”.......)?主语:代词?we?我们在一中学习。РThree were absent.?主语:数词?数词: three?三个人缺席。РTo teach them English is my job.?主语: 不定式: ?to teach them English ?教他们英语是我的工作。?注意:?不定式作主语时,常用形式主语it句型,因此可变为?It is my job to teach them English.?真正主语是to teach them EnglishРEating more vegetables is good for our health.?主语: 动名词短语?eating more vegetables ?多吃蔬菜有益我们的健康。РThe rich are getting richer .?主语:名词化的形容词?the rich ?富人变得越来越富有。РIt is necessary that she should be careful. ?主语: 从句?she should be careful?她必须细心。(她应该细心是很有必要的。)Р2谓语 V.Р定义:?谓语是用来说明主语“做什么”{do},“是什么”{is},或“怎么样”{其他动词}。?谓语有两种形式:?简单谓语和复合谓语。?简单谓语由一个动词(各种时态和语态)或动词短语表示;?复合谓语由两部分组成,分为两种类型:情态动词+动词原形,系动词+表语。?位置:?它在主语后面。?注意:?无论谓语部分属于哪种形式都必须要有动词。谓语和主语在人称和数两方面要一致(主谓一致)。{作文}