Yes I Speak English

"Reach 50 fares in Taxi Mode."

- In-game description

Yes I Speak English is an achievement/trophy in Grand Theft Auto: San Andreas.

Acquisition
Get into a Taxi and when prompted, press the relevant button to start the Taxi Driver side mission. Completing 50 fairs will net the player the achievement. More information on how to get it can be found on the Taxi Driver page.