go by taxi
The Spanish phrase 'ir en taxi' translates to 'go by taxi' in English. This phrase is often used in situations where someone is planning to travel somewhere by taxi, similar to how it would be used in English. In Spanish, the verb 'ir' means 'to go', 'en' is a preposition often translated as 'by' in this context, and 'taxi' is the same in both languages. So if you say 'Voy a ir en taxi', it simply means 'I am going to go by taxi'.
I am going to go to the airport by taxi
This sentence is about a future action involving an individual who intends to use a taxi to get to the airport. The verb 'Voy' means 'I go' and is used here to express a future action. 'Al' is a contraction of 'a el', which means 'to the'.
We should go to the party by taxi
This sentence is a suggestion about going to a party by taxi. 'Deberíamos' is a conditional form of the verb 'deber' which translates into 'should'. It can be used to make suggestions or recommendations.
It's faster to go by taxi.
In this sentence the subject is using a taxi as a method of transportation in order to save time. 'Es' means 'it is' and 'más rápido' means 'faster'. The context implies a comparison to other means of transportation.