守る, 護る, 戍る, まもる
Godan verb, Transitive
1. to protect, to guard, to defend
2. to keep (i.e. a promise), to abide (by the rules), to observe, to obey, to follow
あなたは、自分の家族を守らなければならない。
までに, 迄に
Adverb, Usually in kana
by, not later than, before
昭和天皇が靖国神社で75年までに戦後計8回参拝した。
は
Particle, pronounced わ in modern Japanese
1. topic marker particle
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
まだ, 未だ, いまだ
Adverb, Usually in kana
1. still, as yet, only
with verb in the negative
2. (not) yet
Only まだ
3. more, (more) still
4. at least, comparatively, relatively
NA-adjective
5. unfinished, incomplete, not yet done
私はまだその問題が解けない。