Today you'll learn English phrases with the word "What." These phrases are common in English conversation.#1 - "What's the catch?"Say this in response when something sounds too good to be true... and you suspect there's a hidden problem. For example, if your friend says he'll sell you his car for just $200, you could say, "What's the catch?" because you are wondering if there's something wrong with the car... or if your friend wants you to do some favor in return.Click here for the lesson text: http://www.espressoenglish.net/10-conversational-english-expressions-with-the-word-what/