Note
Sometimes the initial t-sound changes into a d-sound due to rendaku, a phenomenon where the initial consonant of the second part of a compound word becomes voiced.
Unfortunately, there are no clear rules for when rendaku applies.
Usages of 〜tyuu
電気 ストーブ で 部屋中 に 熱 が 広がった。denki sutoobu de heyadyuu ni netu ga hirogatta.
Heat was spread throughout the room by the electric stove.
https://tatoeba.org/eng/sentences/show/124854
この ウイルス は 空気中 で 広がります。kono uirusu ha kuukityuu de hirogarimasu.
This virus spreads through the air.
旅行中 に たくさん の 写真 を 撮りました。ryokoutyuu ni takusan no syasin wo torimasita.
I took a lot of photos during the trip.
彼女 は いつも 授業中 に メモして いる。kanozyo ha itumo zyugyoutyuu ni memosite iru.
She always takes notes during class.
散歩中 に 美しい 花々 を 見つけました。sanpotyuu ni utukusii hanabana wo mitukemasita.
I found beautiful flowers while walking.
入院中 は たくさん の 本 を 読みました。nyuuintyuu ha takusan no hon wo yomimasita.
I read a lot of books during my hospitalization.
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“How do verb conjugations work in Japanese?”
Japanese verbs conjugate based on tense, politeness, and mood. For example, the polite present form adds ‑ます to the verb stem, while the past tense uses ‑ました. Unlike English, Japanese verbs don't change based on the subject — the same form works for "I", "you", and "they".
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