This is my sister and this is my brother 能不能写成this is my sister and (my)brother .把第二句的主\谓语省略?Her last name is Chen and first name is Hua .这是用同一形容词性物主代词修饰,所以and后的HER就省略了,那

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This is my sister and this is my brother 能不能写成this is my sister and (my)brother .把第二句的主\谓语省略?Her last name is Chen and first name is Hua .这是用同一形容词性物主代词修饰,所以and后的HER就省略了,那
This is my sister and this is my brother 能不能写成this is my sister and (my)brother .把第二句的主\谓语省略?Her last name is Chen and first name is Hua .这是用同一形容词性物主代词修饰,所以and后的HER就省略了,那象这样的情况还有什么?and连接的二个句子,什么情况下and后面的句子主语和谓语能省略?或是其他成分能省略,哪位能提供一个系统的有关and后面句子的省略规则或语法知识.能几个例子呗,
I'm a teacher and a mother .这样写行吗?

This is my sister and this is my brother 能不能写成this is my sister and (my)brother .把第二句的主\谓语省略?Her last name is Chen and first name is Hua .这是用同一形容词性物主代词修饰,所以and后的HER就省略了,那
当然不能了,前一句是这是我的姐姐这是我的哥哥,都是单数.
后面的句子是错误的,是复数,应用these are.
主语（或定语）相同,且是并列复句或存在联系,可省略主语（或定语）.如Her last name is Chen and first name is Hua .（定语相同）.
其他成分应一致（时态）.

（this）is my sister NO,my sister is an artist This is my sister.改为复数形式、 This is my sister(变为复数句) This is my sister.(改为一般疑问句) oh,jane,this,is,my,sister,kate. 是this is my sister kate吗 this is not my sister 缩写 This is for my sister是什么意思 This girl is my sister 对划线部分提问：（my sister)对（my sister)提问 This is my sister a什么that is my brother? And this is my sister和This is my sister的区别, This is my sister.________name is Mary.空处填什么? 什么时候用she is my sister ?什么时候用this is my sister?急!急! 什么时候用this is my sister,什么时候用she is my sister? My sister is an office worker.（作同义句）1.My sister （）（）（）（）.2.My sister ( ) ( ) ( ) . this my sister.对my sister提问 sister teacher my English is an .注意,这是连词组句