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1、连词连词and,but and orand,but and orConjunctions and,but and orConjunctions 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
2、 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andLets practice:改错:1,I am pretty or slim._2,She isnt good at math and En
4、glish._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。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
5、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
6、.but B.so C.and D.forBBDBA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.butorSummary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。Homework