gum學測 L3KK [ˈgʌm] ｜ /ˈgʌm/
口香糖·牙齦·樹膠；黏膠
常考多義字，一字身兼三義
Many students in Taiwan stick their used gum under the classroom desk instead of throwing it away.
台灣很多學生會把嚼過的口香糖黏在教室桌子底下，而不是丟進垃圾桶。
義項
嚼口香糖C2noun口香糖
After lunch, she chewed a piece of mint gum to keep her breath fresh.
午餐後，她嚼了一片薄荷口香糖讓口氣清新。
chew guma stick of gum
紅腫牙齦B2noun牙齦
If you don't brush your teeth well, your gums may turn red and hurt.
如果沒把牙齒刷乾淨，牙齦可能會變紅又疼痛。
sore gumshealthy gums
樹幹黏液C2noun樹膠；黏膠
The carpenter used tree gum to glue two wooden boards together.
木匠用樹膠把兩塊木板黏在一起。
tree gumnatural gum
片語
bubble gum吹泡泡糖 →可以吹泡泡的口香糖
gum disease牙齦發炎 →牙周病；牙齦疾病
gum up黏住卡住 →被黏住而卡住失靈
gum tree尤加利樹 →會分泌樹膠的尤加利樹
spit out gum吐掉黏塊 →吐掉嚼過的口香糖
你會不會這樣說？
Brushing your teeth well helps prevent ___ disease. (gum / gym)
看答案
gum
gum 是牙齦，gym 是健身房，外型相近容易混淆。
'The carpenter used tree gum to glue two wooden boards together.' 這裡的 gum 意思最接近？(A) 口香糖 (B) 牙齦 (C) 可當黏合劑的樹膠
看答案
(C)
此句敘述木匠拿來黏木板的黏稠物質，對應樹膠義項。
字族
gummy 黏糊糊的；黏黏的
順路看看
sticky — 跟 gum 一樣有黏性的觸感chew — 咀嚼口香糖時的動作candy — 口香糖也是零食的一種多益練習
本區為多益情境練習，與上方釋義獨立編寫
情境例句
員工休息時間
Leo chewed gum while reading the notice in the staff lounge.
Leo 一邊嚼口香糖，一邊閱讀員工休息室裡的公告。
牙科診所教材
The dental assistant pointed to the gums on the training model.
牙科助理指著教學模型上的牙齦。
詞族
gum noun (singular) 牙齦（單數形式）・gums noun (plural) 牙齦（通常使用的複數形式）
四選一
At the dental clinic, the assistant recorded whether the patient's ____ were swollen.
看答案
gums
空格需要表示牙齦的複數名詞，與 were 一致，因此選 gums。gum 是單數，應搭配 was；gummed 是動詞過去式或過去分詞；gumming 是現在分詞或動名詞，不能在此表示複數的牙齦，作動名詞時也不與 were 一致。
同義改寫
Leo chewed gum while reading the notice in the staff lounge. → Leo chewed chewing gum while reading the notice in the staff lounge.
在咀嚼的情境中，gum 指口香糖，換成完整名稱 chewing gum 後意思不變。
The dental assistant pointed to the gums on the training model. → The dental assistant pointed to the tissue surrounding the bases of the teeth on the training model.
改寫以牙齦的位置與組織特徵說明 gums，並保留助理指向教學模型的動作。