Text A is an exchange of words between a teacher and a pupil, the type of speech is referential which means that the teacher is providing information and giving details
Comparison of the spoken language
People change the way they speak depending on their audience. An example of this would be if a teenager was to speak to another teenager then they are likely to use informal language, if the conversation is between an adult and a teenager then the teenager would alter the way the speak to be better understood by their audience. Informal language contains non standard English such as slang. The use of slang means the speaker is in a more relaxed situation and means that their audience understands the way in which they speak. By using more complex language and not including slang the tone is more formal, a situation of using formal language would be a teenager talking to an adult. In the two examples there are many differences in which people adapt the way they speak depending on their audience.