,have有两种用法,分别是“有”这个实意动词,和完成时态里没有任何字面意义的助动词.1,I have a dog.在这里have是“有”的意思.一般疑问句我们用do来做 Do you have a dog?特殊疑问句无非是 疑问词+一般疑问句的形式2,现在完成时I have finished my homework一般疑问句have直接提前 Have you finished your homework?特殊疑问句也是 疑问词+一般疑问句