a. Mary/tall/her brother.
mary is as tall as her brother
b. A lemon/not sweet/ an orange.
a lemon is not as sweet as an orange
c. A donkey/not big/ a horse.
a donkey is not as big as a horse
d. This dress/pretty/that one.
this dress is as pretty as that one
e. the weather/not cold/ yesterday.
the weather is not as cold as yesterday