have 在什么情况下变一般疑问句提前 have to 变疑问句，直接have提前行不行?为什么要加...

have \u5728\u4ec0\u4e48\u60c5\u51b5\u4e0b\u53d8\u4e00\u822c\u7591\u95ee\u53e5\u63d0\u524d

\u4e00\u822c\u60c5\u51b5\u4e0b\u662f\u5728\u8fc7\u53bb\u5b8c\u6210\u65f6\uff0c\u8fc7\u53bb\u5b8c\u6210\u8fdb\u884c\u65f6\u4e2d\u4f1a\u63d0\u5230\u53e5\u9996\u7684\u3002
\u6bd4\u5982\u8bf41
I
have
finished
my
homework?
Have
you
finished
your
homework?
2
I
have
been
skating
for
2
hours.
have
you
been
skating
for
2
hours?

have to \u662f\u8bcd\u7ec4\uff0c\u505a\u53e5\u5b50\u7684\u8c13\u8bed\uff0chave\u662f\u52a8\u8bcd\uff0c\u4e00\u822c\u7591\u95ee\u53e5\u8981\u4ee5do\u7684\u76f8\u5e94\u5f62\u5f0f\u63d0\u524d\u8fdb\u884c\u53d8\u6362\u3002\u6240\u4ee5\uff0c2.Do you have to tell everyone our secrets?\u6b63\u786e\u3002

• 完成时做助动词 have you finished your homework yet?
  

• 做有的时候,既可以have提前也可以加do
  I have a book--- have you a book?或 Do you have a book?

希望对你有帮助

have 作为助动词帮助构成完成时，需提前；表示有可以有两种情况，即直接提前或加 助动词do

一般情况下是在过去完成时，过去完成进行时中会提到句首的。
比如说1 I have finished my homework?
Have you finished your homework?
2 I have been skating for 2 hours.
have you been skating for 2 hours?

1，完成时做助动词 have you finished your homework yet?
2. 做有的时候，既可以have提前也可以加do
I have a book--- have you a book?或 Do you have a book?

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