比如the sister,his sister是不是第三人称呢?be动词用第三人称单数?

sister能不能缩写为sis 比如the sister,his sister是不是第三人称呢?be动词用第三人称单数? sis 用英语解释下列句子,每空一词1、what's the length of the tabie?---- ---- is the table 2、how old is he?----- ----- his -------3、how tall are you?----- you ------?4、l got a letter from my sitter sister yesterdayl ------ --------my sis the boy made his sister ____(cry) his sister怎样提问The worker is his sister.对his sisiter进行提问 比如the sister,his sister是不是第三人称呢?be动词用第三人称单数?the sister must have been very badly treated这句怎么说,如果是的话那have应该改为has his sister His sister is a member of the rock band.同义句 His sister () () the rock band. his sis likes bananas very much.(改为否定句 His sister is in the room.(对his sister部分提问) The girl in the w___ skirt is his sister. His sister did the dishes just now 改为一般疑问句His sister did the dishes just now 改为一般疑问句 his sister the dishes just now His sister is standing in front of the house.变为同义句 The girl( )( )( )( )the house is his sister Is the girl his sister Yes,she's怎么改 the girl in yellow is his sister改为一般疑问句 The girl yin yellow is his sister.改一般疑问句. His sister is ____ the school music festival 添什么?