この橋はもっとも長い橋だ。

この橋はもっとも長い橋だ。

This is the longest bridge in the world.

この橋(はし)はもっとも長(なが)い橋(はし)だ。

Kono hashi wa mottomo nagai hashi da.

此の (この)

this (something or someone close to the speaker (including the speaker), or ideas expressed by the speaker)

橋 (はし)

bridge

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

最も (もっとも、もとも)

most; extremely

長い (ながい)

long (distance); long (time); lengthy

だ (だ)

be; is; indicates past or completed action; indicates light imperative

Readings: キョウ、はし

Meaning: bridge

Readings: チョウ、なが.い、おさ

Meanings: long, leader, superior, senior