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1、连词and, but and or,Conjunctions and, but and or,祈使句,无主语, 动词原形就可以 表示请求或命令, Lets ,please 表客气 如果变成否定句, Dont加动原是规律,祈使句:祈使句表示请求或命令。 祈使句无主语,谓语动词没有时态和数的变化。 祈使句,动原. Please+动原. 否定:Dont+动原.Lets+动原. 否定:Lets not+动原.,and的用法:,You and I are going there.,I like bananas and pears.,She can sing and swim.,He is tall an
2、d cool.,and的意思是_,表示_关系, 可以连接并列的单词,短语和分句。当有多 个并列的单词或短语时,and要放在最后两 个之间。如果两个分句的主语相同,则第二 个分句的主语可以省略。,“和,并且”,并列,Lets practice:,将下列各句用and连接起来:,1, I am pretty. I am slim._,2, She is good at math . She is good at English._,3, Bob can play soccer. He can play baseball, too._,She is good at math and English.,
3、I am pretty and slim.,Bob can play soccer and baseball.,or的用法:,Do you want to go or stay?,Do you like bananas or pears?,She cant sing or swim.,Is he tall or short?,or的意思是_,表示_关系, 如果两个分句的主语相同,则第二个分句的 主语可以省略。用于否定句或疑问句中连接 并列成分,不用_.,“或,还是”,选择,and,Lets practice:,改错:,1, I am pretty or slim._,2, She isnt g
4、ood at math and English._,3, Can Bob play soccer and baseball?_,She isnt good at math or English.,I am pretty and slim.,Can Bob play soccer or baseball.?,but的用法:,I am short but slim.,She likes bananas , but she doesnt like pears.,She can sing ,but she cant swim.,but的意思是_,表示_关系, 连接两个含义相对或相反的单词,短语或 分句
5、。如果两个分句的主语相同,则第二 个分句的主语可以省略。,“但是”,转折,Lets practice:,( ) 1 My aunt doesnt like cats_ dogs. A. but B. or C. and D. not ( ) 2 Mary _ Lucy told him to come to see us. A. or B. and C. with D. nor ( ) 3 Hurry up, _ well be late for the film. A. and B. but C. so D. or ( ) 4 Be quick, _ well be late. A. and
6、 B. or C. but D. so ( ) 5 We ran to the trees, _ we couldnt see any birds. A. but B. so C. and D. for,B,B,D,B,A,用and, but和or完成句子,We are happy boys _girls.He likes soccer, _ he didnt play it well. Its sunny_ cold.They dont have meat _fish at home. He stayed at home. He watched TV.(合并),and,but,He stayed at home and watched TV.,but,or,Summary,连词口诀,连词and,but还有or,前后一致用and, 前后转折用but, 选择疑问要用or, 否定疑问, and要变or。,Homework,