英语作文主系表结构句型复习知识点精析概要 几个主系表结构的英语句型： Subject + Verb + Predicate 这种句型是系动词后面有一个表语的句型。 例如： He is a student. She is a doctor. They are happy. Subject + Linking Verb + Noun / Adjective 这种句型是系动词后面有一个名词或形容词作表语的句型。 例如： The book is interesting. She is beautiful. They are useless. Subject + Linking Verb + Prepositional Phrase 这种句型是系动词后面有一个介词短语作表语的句型。 例如： He is in jail. She is on the phone. They are at home. 新概念英语mp3 新概念英语词汇量 新概念英语第一册课文 Subject + Verb + Object + Adverbial 这种句型是动词后面有一个宾语和一个副词作状语的句型。 例如： He plays tennis well. She sings beautifully. They dance gracefully. 主系表结构是由主语＋系动词＋表语组成，主要用以说明主语的特征，类属，状态，身份等。系动词有： 1. 表示特征和存在状态的 be，seem，feel，appear，look，smell，taste，sound。 2. 表示状态延续的 remain，stay，keep，continue，stand。 3. 表示状态变化的   become，get，turn，go，run，fall，come，grow。  Our English teacher is thirty years old.  The cake tastes delicious. We feel used to living in big cities. The potatoes went bad in the fields. Their boss seems satisfied with the work. 【巩固练习】 1. 冬季白天短，夜晚长。 2. 十五岁他就成为有名的钢琴家了。  3. 孩子们很少保持安静。 4. 她的工作是在幼儿园里照看儿童。 5. 这个报告听起来很有意思。 【答案】  1. In winter，the days are short and the nights are long. 2. At the age of fifteen，he became a famous pianist. 3. Children seldom keep quiet. 4. Her job is to look after the children in the nursery. 5. The report sounds interesting. 主系表句型的几个特例： 1. As in China，the weather is different from area to area. 2. We are greatly surprised to meet him there. 3. It is not a good idea to spend your vacation with strangers. 4. It is kind of you to say so. 5. It is not easy for them to go there by bike. 最近中国的空气质量引起 了广泛的关注。请阅读下面的漫画，按要求用英语写一篇短文。  内容要求： 1.简要描述漫画内容； 2.简要分析产生这种现象的原因； 3.针对以上现象谈谈你自己的看法(至少两点)。 注意：1.词数100左右，开头已经写好，不计入总词数。 2.作文中不得提及考生所在的学校和本人姓名。 3.参考词汇：口罩mask; 雾霾haze  Recently, the air quality in China 【参考范文】 Recently，the  air  quality  in  China has raised a widespread concern.As is indicated in the picture，an old man and his grandson are taking a walk in the street with masks covering their mouths. As the haze is becoming heavier and heavier，they find it hard to see the buildings and trees around them clearly. The picture conveyed here is that air pollution is quite severe in China. Many factors account for this phenomenon. In the first place，vehicles sending large quantities of poisonous gases are a major source of air pollution. Furthermore，factories that release a great deal of smoke are also responsible for the poor air quality. Besides，burning materials like coal or oil for  homes and offices is another major contributor to air pollution. Personally，to better the air quality，the government and the common citizens should make joint efforts. Riding and walking are wise options for public travels. Meanwhile，effective laws are supposed to be made to guarantee good air quality. 【解析】 这是一篇典型的图画型作文，文章的话题是有关生态环保。本文先是总的提出了问题，然后结合实际情况提出了作者自己的建议，可谓思路清晰逻辑性强。该种题型属于半开放性作文，同学们可以在一定范围内充分发挥想像，给出自己的看法和建议。同时，尽可能使用一些高级词汇和经典句型等，使得文章增色不少，总体看，是一篇非常不错的作文。