よく見張ってなければだめよ。
Sentence Analyzer
English Translation
You must keep your eyes open.
Furigana
よく見張 ってなければだめよ。
Romanji
Yoku mihatte nakereba dame yo.
Words
良く
(よく)
nicely; properly; well; skillfully; skilfully; frequently; often
見張る
(みはる)
to stand watch; to stand guard; to look out; to open one's eyes wide
無い
(ない)
nonexistent; not being (there); unpossessed; unowned; not had; unique; indicates negation, inexperience, unnecessariness or impossibility; not ...; to not be...; to have not ...
駄目
(だめ、ダメ)
no good; not serving its purpose; useless; broken; hopeless; wasted; in vain; purposeless; cannot; must not; not allowed
よ
(よ)
indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!