の
Particle, See 乃, occasionally ん, orig. written 乃 or 之
1. indicates possessive
2. nominalizes verbs and adjectives
See が・1
3. substitutes for "ga" in subordinate phrases
often ん
4. (at sentence-end, falling tone) indicates a confident conclusion
Female term or language
5. (at sentence-end) indicates emotional emphasis
は
Particle, pronounced わ in modern Japanese
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
いつまで, 何時まで, 何時迄
Adverb, Usually in kana
how long?, till when?
いつまで東京にご滞在ですか。