進階 · Unit 12
to 不定詞 — enough to
形容詞、副詞 + enough + to 不定詞的意思是「足夠到可以做…」，關鍵在於 enough 一定要放在形容詞、副詞後面的這個語序。
概念說明
形容詞、副詞 + enough + to 不定詞的意思是「足夠~到可以做…」，關鍵在於 enough 一定要放在形容詞、副詞後面的這個語序。
A. 形態 — 形容詞、副詞 + enough + to V
enough 修飾形容詞、副詞的時候一定放在它們後面，接著再加上 to 不定詞。語序 形容詞、副詞 + enough + to V 請整組記起來。
| 語序類型 | 例子 |
|---|---|
| 形容詞 + enough + to V | She is tall enough to reach it. |
| 副詞 + enough + to V | He speaks clearly enough to be understood. |
| 插入 for + 受格 | The book is easy enough for children to read. |
- She is smart enough to solve this puzzle. (她聰明到足以解開這個謎題。)
- He was brave enough to speak up. (他勇敢到足以說出自己的意見。)
- The tea is cool enough to drink now. (茶現在已經涼到可以喝了。)
- The car is big enough for us to sleep in. (那輛車大到足以讓我們在裡面睡覺。)
B. 改寫成 so ~ that 句型
enough to 句型可以在意思不變的情況下，改寫成 so + 形容詞、副詞 + that + 主詞 + can 的子句。
| enough to 句型 | so ~ that ... can 的替換 |
|---|---|
| He is old enough to drive. | He is so old that he can drive. |
| She is kind enough to help. | She is so kind that she helps everyone. |
| The box is light enough to carry. | The box is so light that I can carry it. |
- He is rich enough to buy a house. (他有錢到足以買一棟房子。)
- She spoke loudly enough to be heard. (她說話大聲到足以讓人聽見。)
- The problem is simple enough to solve. (那個問題簡單到足以解開。)
C. 否定的說法 — not + 形容詞、副詞 + enough + to
「不夠~到可以做…」這種否定，是把 not 加在 be 動詞或助動詞的位置，後面的語序完全維持不變。意思相近的 too ~ to 句型焦點在於「過度」，not enough to 的焦點則在於「不足」。
| 否定句 | 相似的 too ~ to 句子 | 語感差異 |
|---|---|---|
| He is not old enough to vote. | He is too young to vote. | 不足 vs 過度 |
| I'm not tall enough to reach it. | I'm too short to reach it. | 不足 vs 過度 |
| She is not strong enough to lift it. | She is too weak to lift it. | 不足 vs 過度 |
- The child is not old enough to go to school. (那個孩子年紀還不夠大，不能上學。)
- I'm not fast enough to catch him. (我跑得不夠快，追不上他。)
- The soup is not hot enough to serve. (湯還不夠熱，不能上桌。)
- He is not experienced enough to lead the team. (他的經驗還不夠，沒辦法帶領團隊。)
重點整理
- 1enough 修飾形容詞、副詞時一定放在後面，而且後面要接 to 不定詞，這個語序是絕對的。(例: tall enough to reach it.)
- 2enough to 句型改寫成 so + 形容詞 + that + 主詞 + can 的子句，意思也一樣。(例: old enough to drive = so old that he can drive.)
- 3需要意義上的主詞時，就用形容詞 + enough + for + 受格 + to V 的語序把它放進去。(例: The book is easy enough for children to read.)
- 4not + 形容詞、副詞 + enough + to 強調的是不足，too ~ to 強調的則是過度。(例: not old enough vs too young.)
- 5enough 修飾名詞的時候放在名詞前面，但是修飾形容詞、副詞的時候一定放在後面。(例: enough money / old enough)
例句
He is old enough to drive a car.
他的年紀已經大到可以開車了。
She is smart enough to solve the puzzle.
她聰明到足以解開那個謎題。
The room is big enough to fit ten people.
那個房間大到可以容納十個人。
He runs fast enough to win the race.
他跑得夠快，足以贏得比賽。
She spoke loudly enough for everyone to hear.
她說話夠大聲，大家都聽得到。
這個單元還有更多例句。註冊後可以看完整內容並聆聽發音。
容易犯的錯誤
He is old enough to drive.
She is kind enough to help.
The room is big enough to fit ten people.
He is not tall enough to reach it.
She spoke loudly enough for us to hear.