what time is it? 还可以怎样提问？

what's the time?

could you tell me what time it is?
would do me a favor to tell me what time it is?
这样的说法都对。但是显然偏离题意。如果照此扩充式修改的逻辑，那改法也太多了。

do you have the time? 不清楚对不对

what's the time? 对。增加个 by watch ，对本问题而言，没什么意义。

could you tell me what time it is?
do you have the time?
have you got the time?

what is the time by your watch?

专用于男生问女生
很地道的问法

what is the time