词法英语与中文一样，也有名词、动词、形容词等。唯一的不同，是中文没有冠词。英语句子成分也是主谓宾定状补等。一般名词作为主语、宾语，动词作为谓语。注意：名词、动词是单词性质，主语、谓语是句子成分。连接词连接词是英文中最简单的一类词，就是连接词与词、句子与句子。比如Tom and Jerry汤姆和杰瑞。连接词有一个形象的比喻：胶水词。连接词主要分两类：并列连接词和从属连接词。并列连接词并列连词是并列句的连接词，常用连词表示并列、选择、转折、因果等连接关系。1、并列My friend came up to me, held my hand, and said good-bye excitedly. （and不要放在第二个动作前）This book may be used both as a text and as a reference book.（both...and是固定搭配）He speaks not only Chinese but also English.Tom is not so strong as you. （as不能用like）Neither the students nor the teacher knows anything about it. （knows是第三人称单数，这是因为主谓一致中的“就近原则”）2、选择She likes going out with friends or playing outdoor games.Either you or your brother cleans the window. （主谓一致的就近原则）Hurry up, or/or else/otherwise you'll be late.3、转折He is fat, but he is very weak.Although she felt ill, she still went to work. （although和but是不能同时出现的，所以后面用still）She said she would be late, yet she arrived on time.She has the window open, however cold it is outside. （however与形容词连用）4、因果It was still painful, so I went to see a doctor.We rarely stay in hotels, for we can’t afford it. 我们很少住宾馆，因为我们住不起。Mary must have come back home, since her coat is not here. 玛丽一定已经回家了，因为她的外套不在这儿。（since更多表示推测）从属连接词从属连接词是连接主句和从句。1、名词性从句连词that引导名词性从句，没有实际意义，作宾语时可以省略。She said (that) the story was true.2、状语从句的连词I did it because he told me to. （在从句中往往用because）You may come if you want to.I'm going whether you like it or not.Many things have happened since I last saw him.从属连接词的关键是从句，对于英语从句不熟悉的请阅读前一篇《从句》。总结1、连词就是胶水词，连接词和词、句子和句子；2、句子和句子之间只有两种关系，并列和从属，用到的就是并列连接词和从属连接词；3、使用并列连接词要注意主谓一致原则中的就近原则。4、多数连接词都是固定搭配，需要日积月累。