There is a book and a pen on the desk.(变为否定句)
问题描述:
There is a book and a pen on the desk.(变为否定句)
答
There isn't a book or a pen on the desk.and在否定中要改成or.
There is a book and a pen on the desk.(变为否定句)
There isn't a book or a pen on the desk.and在否定中要改成or.