this

Time? It means: What time is it?

what

time

be

It?

What time is it now?

The difference between these two sentences is as follows:

1.

what

this

Time? The theme is.

Time,

what else

time

be

It? The subject of is it, and it is a formal subject.

2.

These two sentences don't necessarily have the same meaning. What is it?

this

Time?

It can also mean: What is time?