sharp

詞型變化：

名詞:sharpness 副詞:sharply 形容詞比較級:sharper 最高級:sharpest 動詞過去式:sharped 過去分詞:sharped 現在分詞:sharping 第三人稱單數:sharps 英文字典

詞意辨析：

keen, acute, sharp, shrewd

這些形容詞均有“銳利的、敏銳的、機敏的”之意。
keen: 多指對複雜艱深的事物或問題有敏銳的觀察和敏捷的理解。
acute: 側重感覺敏銳，能分辨出一般人難以覺察的細微區別。
sharp: 指人頭腦精明、敏銳或機警。
shrewd: 指有頭腦，善於判斷分析，精明過人。

英文解釋：

名詞 sharp:

1. a musical notation indicating one half step higher than the note named
2. a long thin sewing needle with a sharp point

形容詞 sharp:

1. (of something seen or heard) clearly defined
   同義詞：crisp
2. ending in a sharp point
   同義詞：acuate, acute, needlelike
3. having or demonstrating ability to recognize or draw fine distinctions
   同義詞：acute, discriminating, incisive, keen, knifelike, penetrating, penetrative, piercing
4. marked by practical hardheaded intelligence
   同義詞：astute, shrewd
5. harsh
   同義詞：sharp-worded, tart
6. having or emitting a high-pitched and sharp tone or tones
   同義詞：piercing, shrill
7. extremely steep
   同義詞：abrupt, precipitous
8. keenly and painfully felt; as if caused by a sharp edge or point
9. having or made by a thin edge or sharp point; suitable for cutting or piercing
10. raised in pitch by one chromatic semitone
11. very sudden and in great amount or degree
12. quick and forceful

副詞 sharp:

1. changing suddenly in direction and degree
   同義詞：sharply, acutely

相關句子：

1. Cats have sharp claws.
   貓有鋒利的爪子。
2. Bring the object into focus if you want a sharp photograph.
   要照出清晰的照片，就要把焦點對準物體。
3. That woman has a very sharp tongue.
   那個女人說話非常尖刻。
4. I cut my finger on a sharp stone.
   我的手指被一塊鋒利的石頭劃破了。
5. It was very sharp of you to have noticed that.
   你注意到了這一點是夠機靈的。