Page 497 - Basic Japanese

Rashii is added at the end of a sentence and shows that the

fact expressed by the sentence is the speaker’s objective,
logical, careful, and non-intuitive conjecture based on what

he or she heard, saw, or read. The verbs and adjectives that

precede rashii must be in the plain form, except that the da
that appears at the end of a copula and at the end of an
adjectival noun must be deleted.

Ōkawa-san no otaku wa furui rashii desu ne.
Mr. Okawa’s house seems to be old.

Tanaka-san wa musumesan no kekkonshiki ni denakatta

sō desu.
Mr. Tanaka seems not to have attended his
daughter’s wedding.

Mori-san wa buchō ni naritakatta rashii desu.
Mr. Mori seems to have wanted to become the

division manager.

Nihon de wa Feisubukku yori Tsuittā no hō ga ninki ga

aru rashii desu.
Twitter seems to be more popular than
Facebook in Japan.

Ano hoteru no ōnā wa Nihon-jin rashii desu yo.
It seems that the owner of that hotel is

Japanese.