In Phase Five, children will learn more graphemes and phonemes. For example, they already know ai as in rain, but now they will be introduced to ay as in day and a-e as in make.
Alternative pronunciations for graphemes will also be introduced, e.g. ea in tea, head and break.With practice, speed at recognising and blending graphemes will improve. Word and spelling knowledge will be worked on extensively.
Letters and sounds resources: http://www.letters-and-sounds.com/phase-5-resources.html