1) The 1st letter is read in its primary long meaning: sea [i:], oak [əυ], etc.;
2) The 2nd letter is read in its primary long meaning: neutral [u:], either [aı], etc.;
3) Two letters are read in their primary short meanings, forming a diphthong: beige [eı], they [eı], boil [ɔı], oyster [ɔı];
4) One of the letters is read in its primary short or secondary meaning: aunt [ɑ:], theory [ıə], etc.
Ex.1 Read the following words with digraphs ei|ey. Identify the sound of each line.
[ ] 1. beige, deign, heinous.
[ ] 2. either, seismograph, deictic.
[ ] 3. seize, inveigle, ceiling, receive, deceive, conceive, perceive.
[ ] 4. heir, heiress.
[ ] 5. leisure, Leicester.
[ ] 6. counterfeit, sovereign, foreign, surfeit, forfeit.
[ ] 7. eight, freight, neighbour, weight, sleigh, weigh.
[ ] 8. height, sleight.
[ ] 9. they, survey, grey, obey.
[ ] 10. eyrie.
[ ] 11. key.
[ ] 12. monkey, money, whisky, hockey, trolley.