ty
ty — 名詞字尾
1. a suffix added to adjectives to form nouns meaning a quality, condition, or degr
（後綴）表示性質、狀態
加在形容詞後形成名詞，表示某種性質、狀態或程度
a suffix added to adjectives to form nouns meaning a quality, condition, or degree of something
Safety is the most important rule in the chemistry lab.
在化學實驗室裡，安全是最重要的規則。
[{"from": "safe", "to": "safety"}]
Her loyalty to the team never wavered, even during difficult times.
即使在困難時期，她對團隊的忠誠也從未動搖。
[{"from": "loyal", "to": "loyalty"}]
The beauty of the old cathedral drew visitors from around the world.
古老教堂的美麗吸引了來自世界各地的遊客。
Humidity in the greenhouse is carefully controlled for the tropical plants.
溫室裡的濕度為熱帶植物精心調控。
His certainty about the answer gave the rest of the group confidence.
他對答案的確定讓其他組員有了信心。
用法筆記
When -ty is added to a word ending in -e, the -e is usually dropped before adding the suffix (safe → safety, pure → purity). Words ending in -t or -te usually take the extended form -ity or -ety (electric → electricity, anxious → anxiety).
常見錯誤
Learners sometimes confuse -ty (noun suffix) with -ly (adverb suffix). Safety is a noun — the state of being safe — while safely is an adverb describing how an action is done.