带有have to的句子，比如说I have to do my homework这个句子变成一般疑问句是Do you have to do your homework?还是Have you to do your homework?呢，我朋友的老师说要把have提到主语前面，但是我记得是加助动词do的...求详细解答，本人知道现在完成时。
不能提前。 have to中的have是不能做助动词的。 否定：don't/doesn't have to 疑问：Do/Does+主语+have to...? have got to中的have是可以做助动词的。 Have you got to leave? I haven't got to leave. have做“有”的意思时，可以当做助动词用的。 Have you any money?=Do you have any money? I haven't any money.=I don't have any money. 至于现在完成时，have/has就是助动词，是可以提前的。