第三條件句與混合條件句怎樣分？

第三條件句的條件與結果都在過去，主句用 would have + 過去分詞；混合條件句的條件在過去、結果在現在，主句用 would + 原形。

Had I known 這類倒裝是甚麼？

省略 if 之後把 had 提到句首，意思等於 If I had known，主句形式不變。

小學英文：條件句挑戰練習（10 題）

2026-11-05

小學英文：條件句挑戰練習（10 題）

第三份是混合挑戰：第三條件句的 had + 過去分詞配 would have + 過去分詞、條件在過去而結果在現在的混合條件句、unless 與 Had I 倒裝，最後三題改錯要指出 will 誤入 if 子句、would 誤入 if 子句、主句漏了 have 三處錯。

快速答案 第三條件句：if 子句 had + 過去分詞，主句 would have + 過去分詞；混合條件句條件在過去、結果在現在，主句用 would + 原形；unless 等於 if not，子句仍用現在式；Had I known 等於 If I had known；改錯要刪去 if 子句的 will 與 would，並補回主句的 have。

01 本卷資料（做完才看答案）

項目	內容
題數	10 題
建議時間	約 30 分鐘
難度分佈	挑戰 10
對應章節	所屬章節：小學英文｜條件句：if 子句與三個層次
適用年級	小六

02 題目（10 題）

挑戰If you had studied harder, you ______ (pass) the test.
挑戰If they ______ (leave) earlier, they would not have missed the train.
挑戰If I ______ (not / forget) my keys, I could have opened the door.
挑戰If he had taken the medicine, he ______ (feel) better now.
挑戰改錯：If it will rain tomorrow, we will stay at home.
挑戰改錯：If I would be rich, I would travel the world.
挑戰改錯：If she had known, she would tell me.
挑戰Unless you hurry, you ______ (miss) the train.
挑戰Had I known about the traffic, I ______ (leave) earlier.
挑戰If I ______ (be) taller, I would join the basketball team.

03 答案與一句解說

題號	答案	一句解說
1	would have passed	第三條件句主句用 would have + 過去分詞。
2	had left	與過去事實相反，if 子句用 had + 過去分詞。
3	hadn’t forgotten	否定用 hadn’t + 過去分詞。
4	would feel	混合條件句：過去的條件，現在的結果用 would + 原形。
5	If it rains tomorrow, we will stay at home.（if 子句用現在式代替將來式，不用 will）	if 子句永遠不用 will。
6	If I were rich, I would travel the world.（第二條件句 if 子句用過去式 were，不用 would）	if 子句不用 would，be 用 were。
7	If she had known, she would have told me.（第三條件句主句要用 would have + 過去分詞）	had known 之後主句要一致用 would have told。
8	will miss	unless 等於 if not，子句用現在式，主句用 will。
9	would have left	倒裝 Had I 等於 If I had，主句照用 would have + 過去分詞。
10	were	與現在事實相反，be 用 were。

04 做完之後怎樣跟進

對完答案，只重做錯的那幾題，並在錯題旁寫出錯在哪一步（公式、單位還是抄錯數）。
同一題隔兩日再做一次；兩次都對才可以移到下一份練習。
家長只需看答案欄與解說欄，不必逐題講解。

免費配對導師導師登記 →

本卷題目與答案由 TutorZone 團隊原創編寫，並非任何學校、出版社或考試局的試題；數值與答案均以程式核算。