这个英语句子改否定句?

题目

这个英语句子改否定句?
1：jim has alredy come to schod late
2: ton alwoys come to schod late
3: I think there is going to be an english test next week
麻烦大家帮我改下否定句,这个我是按照本子上抄的 不知道哪个地方抄错了,请大家帮我改下!

答案

1.Jim hasn't yet come to school late.
2.Tom seldom comes to school late.
3.I don't think there is going to be an English test next week.