be动词3种形式How( )your mother?

be动词3种形式How( )your mother? How --- your teacher?（填be动词） how ( )填be动词 your sisterA：how ( )填be动词 your sister B She is very fine.用所给词适当形式填空Is Nancy in (English) now? How is your mother today?Be动词为什么用is How is your mother today? Be动词为什么用is How your mom在问号里填上合适的be动词 be动词有哪几种形式 be动词的形式 1.若3＜a＜5,求l3-al+l5-al的值. 2.若l2a-4l与lb-3l互为相反数,求2a+b的值 3. 若l-5al=-5a,a取值为（）be动词的3种形式How( )your father and mother? 用be动词适当形式填空1:I[ ]jim,you[ ]mary2:--how[ ]you?--I[ ]fine,thanks,andyou?--Ifine,too..3:-[ ]you michaei?5:--how[ ]kangkang?--he[ ]fine What____(be)your name?l'm Nancy适当形式填空 how many lessons-------your slassmate-------(have) on monday动词的适当形式填空 动词适当形式填空How often does your sister_____________(eat) junk food? How many people are there in your building how是副词、为什么要有be动词,be不修饰副词吧、、、、、、、 how much ______(be) this pair of boots?用动词恰当形式填空 How ( ) Mary?( ) be动词How ( ) Mary?( ) be动词 be动词的几种形式?be动词的几种形式是什么?都有什么形式呢? How is your mother yesterday?这个句子中的be动词是用was还是is?