Last Monday in my phonetic and phonology class, we saw the an important topic that is intonation, we saw different examples about intonation, we learn that intonation is a very important issue when we talk, we have to do the correct intonation because If we don’t do the correct one we won’t be able to communicated in a proper way, so that we can confuse the listener,
Mainly there are two kinds of intonation, the Rising intonation that means the pitch of the voice increases over time, and the falling intonation that means that the pitch decreases with time. A dipping intonation falls and then rises, whereas a peaking intonation rises and then falls.
A very good example taken from northeastern American English, is that it has a rising intonation for echo or declarative questions (He found it on the street?), and a falling intonation for wh- questions (Where did he find it?) and statements (He found it on the street.). Yes or no questions (Did he find it on the street?) often have a rising end, but not always.
I would add how to mark the intonation on a sentece: for the International Phonetic Alphabet, "global" rising and falling intonation are marked with a diagonal arrow rising left-to-right [↗] and falling left-to-right [↘], respectively. These may be written as part of a syllable, or separated with a space when they have a broader scope: