句型转换,变为否定句
问题描述：
句型转换,变为否定句
Her parents are Chinese teachers.
There is some coffee in the cup.
There are some trees behined my house.
I have some red coats.
The boy can sing English songs.
These are my books.
Her father is a factory worker.
答
Her parents aren't Chinese teachers.There isn't some coffee in the cup.There aren't some trees behined my house.I havn't some red coats.The boy can't sing English songs.These aren't my books.Her fathe...