This is (expensive) meal I've ever had.
the most expensive
This is (big) pizza I’ve ever seen! (Superlative)
the biggest
The mountain we climbed last summer was (high) I've ever been on. (Superlative)
the highest
That was (easy) test that I have taken so far (Superlative)
the easiest
This is (delicious) cake I've ever tasted. (Superlative)
the most delicious
I think learning Spanish is (difficult) learning French. (Equal)
as difficult as, more difficult than
This restaurant is not (good) the one we went to last week. (Equal)
as good as
This phone is not (expensive) the one I wanted to buy. (Equal)
as expensive as
The coffee I had this morning was not (good) the one I had yesterday. (Equal)
as good as
Swimming in the ocean is not (safe) swimming in a pool. (Equal)
as safe as
The movie we watched yesterday was (bad) I expected. (Comparative)
worse than
He speaks English (good) anyone else in our class. (Comparative)
better than
The exam was (easy) I expected. (Comparative)
easier than
My apartment is (small) yours, but it's also (cheap). (Comparative)
smaller than, cheaper
I think skiing is (exciting) snowboarding. (Comparative)
more exciting than
(hard) you study, (good) your grades are (Double)
The harder you study, the better your grades are.
