连词and but and or学习教程.pptx

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加动原是规律第1页/共13页祈使句：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.第2页/共13页and的用法：You and I are going there.I like bananas and pears.She can sing and swim.He is tall and 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”并列第3页/共13页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.I am pretty and slim.Bob can play soccer and baseball.第4页/共13页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第5页/共13页Lets practice:改错：1,I am pretty or slim._2,She isnt good 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.?第6页/共13页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。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”转折第7页/共13页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 B.or C.but D.so()5 We ran to the trees,_ we couldnt see any birds.A.but B.so C.and D.forBBDBA第8页/共13页用用and,but和和or完成句子完成句子1.We are happy boys _girls.2.He likes soccer,_ he didnt play it well.3.Its sunny_ cold.4.They dont have meat _fish at home.5.He stayed at home.He watched TV.(合并)andbutHe stayed at home and watched TV.butor第9页/共13页Summary第10页/共13页连词口诀连词口诀连词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。第11页/共13页Homework第12页/共13页感谢您的观看！第13页/共13页