These is my sister.这句话对吗?

These is my sister.这句话对吗? 英语这句话对吗The person is my sister to drow the picture MY sister work in the A hospital这句话对吗? these are my an uncle and aunt 这句话对吗 She is Mary and Tom’s sister.这句话对吗? I'm very tall but my sister is very short .这句话对吗?如果不对,错在哪? Where is my desk?这句话对吗? My pen is lost.这句话对吗? .so is my brother,sister and my uncle对吗? Those are my two sister——这句话对吗,如果不对,怎么改正.. 英语翻译（ ）这句话还可以表示为：My sister is （ ） （ ）than me.My sister is no Is the woman next to your sister your mother?这句话语法对吗?