He did not have a good reputation in his home town.

He did not have a good reputation in his home town.

意思是”他在他的家乡没有什么好名声．”

在这句话里面，have是个实义动词，意思是”拥有”,

所以前面要加助动词，助动词后面用动词原形．

例如：He did a good job.(他做得很好．)

否定句就是”He didn't do a good job. ”

与Have一样，do也是同时拥有助动词和实义动词两个含

义，所以在做实义动词时，句子如果否定前面还应该多加

一个助动词．

因为前面有助动词did（not)，如果没有did
那么就是He had a good reputation in his home town.

前面的助词did 已经是过去时了

如前面一人回答的，用了DID以后后面的动词要用原型

前面助动词do已经用过去时did，所以have还用原形