Short "a" sound:
* cat
* hat
* mat
* bag
* man
* plan
* ran
* trap
Long "a" sound (as in "say"):
* face
* bake
* shade
* name
* wave
* plate
* snail
* paint
Other words with similar vowel sound:
* wait
* great
* straight
* break
* steak
Remember that the spelling doesn't always match the sound!