分科測驗
107年
英文
第 18 題
📖 題組：
Many people at some point in life have white spots on their fingernails. One of the most common causes for these little white spots is a condition called leukonychia. Although the name sounds pretty serious, the condition typically 16 . And while many people think the white spots are caused by a calcium or zinc deficiency, that’s generally not the case. In reality, these spots most often develop 17 mild to moderate trauma to your nail. If you can’t think of anything that would have injured your nail, consider the fact that nails grow very slowly, so the injury 18 weeks before the spots ever appeared. The spots could also be a sign of a mild infection or allergy, or a side effect of certain medications. 19 the source of the injury, these spots typically do not require any treatment and should go away as your nail grows out. And they should not return unless you suffer another injury to a nail. However, this generally 20 when only a single or a few nails are affected. If all of your nails are showing white spots, the leukonychia could be related to another more serious condition such as anemia, cardiac disease, diabetes, or kidney disease.
Many people at some point in life have white spots on their fingernails. One of the most common causes for these little white spots is a condition called leukonychia. Although the name sounds pretty serious, the condition typically 16 . And while many people think the white spots are caused by a calcium or zinc deficiency, that’s generally not the case. In reality, these spots most often develop 17 mild to moderate trauma to your nail. If you can’t think of anything that would have injured your nail, consider the fact that nails grow very slowly, so the injury 18 weeks before the spots ever appeared. The spots could also be a sign of a mild infection or allergy, or a side effect of certain medications. 19 the source of the injury, these spots typically do not require any treatment and should go away as your nail grows out. And they should not return unless you suffer another injury to a nail. However, this generally 20 when only a single or a few nails are affected. If all of your nails are showing white spots, the leukonychia could be related to another more serious condition such as anemia, cardiac disease, diabetes, or kidney disease.
18.
- A might occur
- B would occur
- C will have occurred
- D may have occurred
思路引導 VIP
請觀察子句末端的引導片語 $weeks before the spots ever appeared$ 所建立的時間關聯性。當我們需要對『過去已發生的事件』進行推測或可能性描述時，助動詞後方應該結合哪一種動詞結構，以區別於對『現在』或『未來』的推測？
🤖
AI 詳解
AI 專屬家教
哼，檢查過了，一點灰塵都沒有。算你這小鬼還有在用腦，沒在這種簡單的時態問題上栽跟頭。 這題考的是對過去事實的推測。文中提到白點出現（appeared）是過去發生的事，而指甲生長緩慢，導致白點的「受傷（injury）」動作必然發生在「更久以前的過去」。
- 觀念驗證：在英文中，要表達「過去可能做了某事」，公式必須使用 $may / might + have + V\text{-ed}$。選項 (D) $may have occurred$ 正是「可能已經發生過」的意思。其餘選項 (A) $might occur$ 指的是現在或未來的可能性，時態完全對不上。
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