(cold / today / yesterday)
Today is as cold as yesterday. / Today isn't as cold as yesterday. / Is today as cold as yesterday?
(expensive / this phone / that one)
This phone is as expensive as that one. / This phone isn't as expensive as that one. / Is this phone as expensive as that one?
(happy / I / my friend)
I am as happy as my friend. / I am not as happy as my friend. / Am I as happy as my friend?