be动词的一般现在时形式

1be动词的一般现在时形式：am,is,are如何使用他们一般由句子的主语决定be动词用法口诀：我（I）用am,你（you）用are，is连着他，她，它。单数名词用is,复数主语都用are用am,is,are填空：1：Mymother_____ateacher.2:Yoursister_____tenyearsold.3:Hisstudents_____allintheclassroom.4:YouandI_____goodfriends.5:I_____fromGuangdong.6:Lucy_____anEnglishgirl.7:She____inClassTwothisyear.第三人称单数（三单）：除I和you以外的单数8:You____ourChineseteacherthisterm.含有be动词句子的句型转换句型变换口诀：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。疑问否定任你变，句首大写莫迟疑。含有be动词的句型转换练习：1：Iamlatetoday.否定句：__________________________________一般疑问句：________________________________肯定回答：_________________否定回答：_________________2:TomisinClassTwo.否定句：__________________________________一般疑问句：________________________________肯定回答：_________________否定回答：_________________3:Wearegoodstudents.否定句：__________________________________一般疑问句：________________________________肯定回答：_________________否定回答：_________________24:Iamdrawingapicture.否定句：__________________________________一般疑问句：________________________________肯定回答：_________________否定回答：_________________用适当的be动词填空1.I______aboy.______youaboy?No,I_____not.2.Thegirl_______Jack’ssister.3._______yourbrotherintheclassroom?4.Who_______I?5.Thejeans_______onthedesk.6.There_______agirlintheroom.7.Mysister'sname_______Nancy.8.There_______someapplesonthetree.9.There_______aboy,twogirls,threemenandtenwomeninthepark.10.Thedog______tallandfat.◆主谓缩写原则即be动词与作主语的名词或代词缩写。去掉am,is,are的第一个字母，用“’”代替。如：am→’m,are→’re,is→’sIam=I’myouare=you’reheis=he’ssheis=she’sitis=it’sweare=we’reyouare=you’retheyare=they’re3◆否定缩写原则即be动词与not可以缩写。not中的“o”用“’”代替.如：isnot→isn’t,arenot→aren’t◇特别提醒：am与not不可缩写。不能同时使用两个缩写形式。写出下列句子中划线部分的缩写形式。1.IamHelen._______2.Thosearenotmypictures._______3.Whoarethey?_______4.Thatisacleverboy._______5.HernameisKim._______I’mnot.youaren’t.heisn’t.No,sheisn’t.itisn’t.wearen’t.youaren’t.theyaren’t.