I will not tell them my theory .
或者 :I won't tell them my theory.
在助动词 will 后面加否定词.
翻译:我不会告诉他们我的理论.he asked me to ring him up.(否定句)你好;He doesn't ask me to ring him up .he 是第三人称单数, 否定句中 , 把否定词 doesn't 加在主语后面, 实意动词, 还原为原形ask