要是當初…(第三條件句)

🎯 這一課你會學會

講對過去的假設與後悔——「要是當初我讀了書,就會考過了(但我沒讀,所以沒過)」。用 If + had + 過去分詞, would have + 過去分詞。這是講「早知道…」最道地的方式。

💬 先聽一段對話

Amy: I failed the test.（我考試沒過。) Ken: If you had studied more, you would have passed.（要是你多讀點,就會過了。) Amy: I know. I should have started earlier.（我知道。我該早點開始的。) Ken: Don't worry. If it had been easy, everyone would have passed!（別擔心。要是它簡單,大家早就都過了!)

🔑 關鍵句型

• If + had + 過去分詞, 主詞 + would have + 過去分詞。（對過去的假設)
  • If I had known, I would have called you.（早知道就打給你了——但我不知道)
• 結果那半也能用 could have / might have + 過去分詞。

🧩 文法點:第三條件 = 想像一個「沒發生的過去」

① 結構(兩半都往過去推一級):

• if 那半:had + 過去分詞(過去完成)
• 結果那半:would have + 過去分詞
• If I had left earlier, I would have caught the train.

② 意思:事情已經發生了、無法改變**,你在想像「如果當初不一樣」:**

• If you had told me, I would have helped.（你沒告訴我,所以我沒幫——惋惜)
• 講第三條件 = 暗示「事實正好相反」。

③ 三種條件一次看清:

	if 那半	結果那半	講的是
第一	現在式	will + 原形	真的可能(未來)
第二	過去式	would + 原形	假設現在/未來(不真實)
第三	had + 過去分詞	would have + 過去分詞	假設過去(已無法改變)

④ 常一起用的「should have + 過去分詞」= 後悔(當初該做卻沒做):

• I should have studied.（我當初該讀書的——但沒讀,後悔)
• (下一單元的推測情態會再深入 should have / could have。)

📒 高頻單字

單字	KK 音標	中譯	例句
pass	/pæs/	通過、及格	pass the test（考過)
fail	/fel/	失敗、不及格	I failed.（我沒過。)
earlier	/ˈɝliɚ/	更早	start earlier（早點開始)
regret	/rɪˈɡrɛt/	後悔	I regret it.（我後悔。)
happen	/ˈhæpən/	發生	It wouldn't have happened.（就不會發生了。)

🗣️ 發音提醒

• would have 口語常縮成 would've /ˈwʊdəv/(「WOOD-əv」),聽起來像 "would of"(但別那樣拼)。
• had 弱讀 /həd/;If I'd known = If I had known。
• passed /pæst/ 跟 past 同音。

✍️ 開口練習

練習 1:第二還是第三條件?

• If I ＿ (have) money now, I ＿ (buy) it.（現在假設)→ had … would buy（第二)
• If I ＿ (have) money then, I ＿ (buy) it.（過去假設)→ had had … would have bought（第三)

練習 2:講一個「要是當初」。

If I had ＿(過去分詞), I would have ＿(過去分詞).

練習 3:用 should have 講一個後悔。

I should have ＿＿.

🎒 帶走

• 第三條件 = If + had + 過去分詞, would have + 過去分詞,講對已發生過去的假設(暗示事實相反)。
• 三條件:第一(真·未來)、第二(假設·現在)、第三(假設·過去)。
• should have + 過去分詞 = 當初該做卻沒做的後悔。

下一課,講願望:I wish——「但願…」,把假設用在「希望不一樣」上。