中考英语语法精典讲解课件词法部分《连词》ppt--初中英语精选.ppt

语法精典讲解 词法部分 （连词） 08连词的用法 【连词的用法】（讲解1） 连词主要分并列连词和从属连词两类,是种虚词不能独立担任句子成分而只起连接词与词、短语与短语、句与句的作用.并列连词用来连接平行的词、词组和分句.如:and, but, or, nor, so, therefore, yet, however, for, hence, as well as, both and,not only...but also, either or, neither nor, (and)then等等. 1、并列连词与并列结构: 1）and 与 or. （错）They sat down and talk about something. （错）They started to dance and sang. （错）I saw two men sitting behind and whisper there. （对）They sat down and talked about something. （对）They started to dance and sing. （对）I saw two men sitting behind and whispering there. 解析: 第一句:and 连接两个并列的谓语,所以 talk 应改为 talked. 第二句:and 连接两个并列的动词不定式,第二个不定式往往省略to,因此sang 应改为 sing. 第三句:and 连接感观动词saw后面的用作宾补的两个并列分词结构,因此whisper应改为whispering. 注意:and 还可以和祈使句或名词词组连用表示条件.（or也有此用法） Make up your mind, and youll get the chance. = If you make up your mind, youll get the chance. One more effort, and youll succeed. = If you make one more effort, youll succeed. * 08连词的用法 【连词的用法】（讲解1） 2）both and 两者都. She plays（both）the piano and the guitar. 3）not only but（also）, as well as. She plays not only the piano, but（also）the guitar. 注意: not only?but also 关联两个分句时,一个分句因有否定词not 而必须倒装. Not only does he like reading stories, but also he can even write some. 4）neither nor 既不...也不... . 谓语动词采用就近原则,与nor后的词保持一致. Neither you nor he is to blame. * 08连词的用法 【连词的用法】（讲解1） 2、比较and 和 or. 并列结构中,or通常用于否定句,and用于肯定句.但有时and也可用于否定句.请注意其不同特点: There is no air or water in the moon. There is no air and no water on the moon. 在否定中并列结构用or连接,但含有两个否定词的句子实际被看作是肯定结构,因此要用and. 典型例题 -I dont like chicken __ fish. -I dont like chicken, __ I like fish very much. A. and; and B. and; but C. or; but D. or; and 答案C. 否定句中表并列用or, but 表转折. 判断改错: （错）We will die without air and water. （错）We cant live without air or water. （对）We will die without air or water. （对）We cant live without air and water. * 08连词的用法 【连词的用法】（讲解1） 3、表示选择的并列结构. 1）or意思为“否则”. I must work hard, or Ill fail in the exam. 2）either or意思为“或者...或者...”注意谓语动词采用就近原则. Either