1. A method comprising: at an electronic device with a display, one or more input devices, and one or more audio output devices: displaying, on the display, a portion of displayed text that includes a plurality of words; receiving a request to convert the plurality of words in the portion of the displayed text to speech; determining whether a language ambiguity exists based on an analysis of the plurality of words of the portion of the displayed text, wherein the language ambiguity indicates that a plurality of candidate languages are applicable for converting the plurality of words in the portion of displayed text to speech; in accordance with the determination that the language ambiguity exists, concurrently displaying, on the display, the plurality of candidate languages for converting the plurality of words in the portion of the displayed text to speech, wherein the plurality of candidate languages was selected based on the analysis of the plurality of words in the portion of the displayed text; while concurrently displaying the plurality of candidate languages, receiving, with the one or more input devices, input indicative of selection of a first candidate language from the concurrently displayed plurality of candidate languages; and in response to receiving the input indicative of selection of the first candidate language, outputting, with the one or more audio output devices, audio corresponding to the plurality of words in the portion of the displayed text, wherein the audio comprises a conversion of the plurality of words in the portion of the displayed text to speech in the first candidate language.