I have to tell him not to hurt himself.中的not可以用don't吗?为什么?那若是这个句型呢：I was driving quickly.He said to me"You'd better not do it."

if bob____(come) back tomorrow,tell him to come to my office,and I have something important to tell i have to tell a ( )lie to make him feel better 填颜色 please tell him right a____ I have to v___a friend.Don't f___to bring your guitar please tell him right a____ I have to v___a friend.Don't f___to bring your guitar I need ( ) my friend.I have something important to tell him.A.see B.to see CC.seeing D.sees have you decided to tell him?yes,i will tell him about it as soon as i ___ him next Mondaya:will seeb:am going to seec:seed:would see I have something important to tell your father.Could you help me take a m____ for him? Tell me what i have to do . Tell me what i have to do i have sometimes e ( ) to tell you i could find nobody to tell him the secret同义句i could_____ _____ ______ to tell him the secret.还有一道选择题hom many flowers have you received?A.Nothing B.None C.No one D.Not I have something (tell) you.为什么用 to tell So I have to s______to him. I am a to tell him the bad news I want to tell him the truth .改成否定句 I'd tell him to leave me alone 我想知道 I was about to tell him the secret I find it necessary to tell him about it.把 it necessary to tell 换成 that necessary to tell