[Grammar] take taxi or take a taxi?

[wotcha]

Take taxi?

or

Take a taxi?

:?:

 

[Gillnetter]

Take taxi?

or

Take a taxi?

:?:

If you take the time to reason this out you should see that "a" is required here. You can only take one taxi at a time. "a" refers to one thing - "I want a car" = I want one car.