一、be(am、is、are)的基本用法)的基本用法:我(我(I)用)用am,你(,你(you)用)用are,is用于他用于他(he)她()她(she)它()它(it),),单数用数用is复数用复数用are,否定句在否定句在be后加后加not,一般疑一般疑问句将句将be提前。回答:提前。回答:Yes,人称代人称代词+be./No,人称代人称代词+be+not.如:如:.1)HeisMr.Chen.HeisnotMr.Chen.-IsheMr.Chen?-Yes,heis./No,heisnt.2)Iamastudent.Iamnotastudent.-Areyouastudent?-Yes,Iam./No,Iamnot.3)Theyareteachers.Theyarenotteachers.-Aretheyteachers?-Yes,theyare./No,theyarent.1._youfine?2.I_Mr.Chen.3._heyourmother?4.-_theyfromJapan?-Yes,they_.5.You_ateacherandshe_adoctor.6.Where_