用there be句型造句並變為否定,疑問,肯定句,並做肯否定回答.單複數句都要,

用there be句型造句並變為否定,疑問,肯定句,並做肯否定回答.單複數句都要,

單數:肯定句:There is an apple on the desk.否定:There isn`t an apple on the desk.疑問:Is there an apple on the desk?肯定回答:Yes,there is.否定回答:No,there isn`t.複數:肯定句:There are some appl...