为什么ask sb to do sth的否定形式是ask sb not to do sth但 I want to be an actor.的否定形式是I don't want to be an actor不都是动词不定式吗?

ask的句型是ask sb to do sth还是ask sb do stask的句型是ask sb to do sth还是ask sb do sth? ask sb to do sth ask sb to do sth. ask sb to do sth ask sb do sth 、ask sb doing sth还是ask sb to do sth一定要正确的 为什么Allow sb to do sth,Ask sb to do sth就有to,而Let sb do sth ,Help sb do sth 就不用呢? ask sb do/to do sth ask sb sth ask sb to do sth ask sb for sth let sb do sth和ask sb to do sth的区别 make sb do sth,invite sb to do sth,ask sb to do sth,let sb do sth这些短语的意思?区别? ask sb to do sth的意思求问... ask sb.to do sth的中文意思 ask sb do sth有这一说吗?我知道还有 ask sb to do sth 直说do sth ask/tell sb.not to do sth ask sb to do sth 啥意思 ask sb do sth 还是 ask sb to do sth .有一句口语。ASK ME OUT ask sth to sb ask sb sth ask sb to do sth还是to doing sth