1.Peter does not have a yesllow peanile case.
2.My mother doesn't have a good friend
3.She does not have two red bags.
4.We don't have a good math teacher.
5.They do not have four english books.
这个是讲的第三人称单数,复数的否定.一般都在动词前加上助动词《do,does,再加上否定词not.单数用DOES,复数用DO还是自己要弄明白了 ,不然考试的时候 你可没法百度.