四年级上语法

四年级语法•Be动词(2-5)•肯定句变否定句(6-9)•肯定句变一般疑问句(10-16)•一般疑问句回答（17-）Be动词用法口诀：我用am，你用are，is连接他她它；单数名词用is，复数名词全用are；变疑问往前提，句末问号莫丢弃；变否定更容易，be后not莫忘记。amisare人称代词（主格）be动词我____________你____________他____________她____________它____________我们____________你们____________他们____________isamyouhesheitweyoutheyareisIisareareare填上合适的be动词练习：1.I________John.2.She_______astudent.3.JaneandTom_________myfriends.4.Mysisters_______tall.5.There_____somestorybooksinmyschoolbag.6.There________manytigersinthezoo.7.I_______shortandthinnow.8.We________students.9.They________inthezoo.10.Thecat_______onthechair.11.Where________yourfriends?12.MissZhang_______ateacher.amisareareareareamareareisareis•Who______you?•______yourbrotherintheclassroom?•You____adoctor.•Howold_____yourteacher?•Mysister'sname______Nancy.•I______aboy.______youaboy?Yes,I______.No,I_____not.areIsareisisamAreamam肯定句变否定句一步法：1.句中有be，在be后加not,2.句中有can,在can后加not.Example:Iamastudent.(改为否定句)思考：句中be动词是_____，在_____后面加_____。amamnotIamnotastudent.1.Thisisyoursister.Thisisnotyoursister.2.Itisamathsbook.It’snotamathsbook.3.Youareagoodboy.Youarenotagoodboy.4.Wearegoodfriends.Wearenotgoodfriends.5.Theyaremyparents.Theyarenotmyparents.6.Iamhungry.Iamnothungry.•含义：用yes或no来回答的疑问句，称为一般疑问句，句末多读升调，句末用问号“？”肯定句变一般疑问句变一般疑问句句中有be，1、把be提前,首字母大写，2、其余照抄，3、句末变问号。（注意第一、二人称的变化）三步走：人称变化：Iam变成_____weare变成_____my变成_____our变成_____AreyouAreyouyouryourHeistallandstrong.Example:思考：1、句中be动词是____,把____提前，___大写isisiIs2、其余照抄hetallandstrong3、句末改为？？Example:•Iamastudent.Areyou•ThisismyEnglishteacher.Isastudent?thisyourEnglishteacher?•Thatisanelephant.Isthatanelephant?•Sheisquietandfriendly.Isshequietandfriendly?•Sarahisinthestudy.IsSarahinthestudy?•Theyareonthesofa.Aretheyonthesofa?•Thisismyschool.Isthisyourschool?•Amyisinthestudy.IsAmyinthestudy?•Myfatherisateacher.Isyourfatherateacher?•Mymotherisadoctor.Isyourmotheradoctor?一般疑问句的回答•肯定回答：Yes,人称代词+be动词Yes,Iam.Yes,heis.Yes,weare.•否定回答：No,人称代词+be动词和not的缩写形式No,youaren’tNo,heisn’t.Be动词缩写isnot缩写成isn’tarenot缩写成aren’tExample:Heistallandstrong.Ishetallandstrong?（作肯定回答）思考：Yes，人称代词+be动词。Yes,heis.（作否定回答）思考：No,人称代词+be动词和not的缩写形式。No,heisn’t.•Sheisquietandfriendly.Isshequietandfriendly?作肯定回答：Yes,sheis.作否定回答：No,sheisn’tExample: