文法講座 009:連接詞「除非」unless
http://www.learnerhall.org/2012/11/unless.html
1️⃣ 連接詞 unless「除非」,意思和連接詞「except if」及「if not」相同,但不需搭配假設語法。
2️⃣ 句子 1 + unless + 句子 2,意味著除非「句子 2」,不然「句子 1」。連接詞 unless 遇到 「未來時間」,unless後方動詞需改用「現在式」。其他遇 「未來時間」,後方動詞需改用「現在式」的連接詞有:when、before、after、if、until。
3️⃣ 連接詞 unless 放句首,打逗點。
例:除非下雨,不然我們明天會去中央公園野餐。
✓ We will go on a picnic at the Central Park if it doesn't rain tomorrow.
✓ We will go on a picnic at the Central Park unless it rains tomorrow.
✓ Unless it rains tomorrow, we will go on a picnic at the Central Park.
例:除非你在 5 分鐘內準備好出門,不然我就要丟下你先走。
✓ I will leave without you unless you are ready in five minutes.
✓ Unless you are ready in five minutes, I will leave without you.
✓ If you aren't ready in five minutes, I will leave without you.
✓ I will leave without you unless you are ready in five minutes.
✓ Unless you are ready in five minutes, I will leave without you.
✓ If you aren't ready in five minutes, I will leave without you.
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▍選出正確的句子
Ⓐ I won't go to Justin Bieber's concert unless Lucy will want to.
Ⓑ We can sit in the front row unless you don't want to sit at the back.
Ⓒ Susan will put on weight unless she eats high-calorie food.
Ⓓ Unless someone has a better idea, we can go to a movie.
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Ⓐ 選項:除非 Lucy 想去聽小賈斯汀的演唱會,不然我是不會去的。
連接詞 unless 遇到未來式 won't go,unless 後方句中動詞需改用「現在式」,故句中的 will want 應改成 wants。
Ⓑ 選項:除非你想坐後面,不然我們可坐前排位置。
連接詞 unless 意指「if not」。
所以 Ⓑ 選項 = We can sit in the front row if you want to sit at the back.
若你想坐後面的話,我們可坐前排 ( 文意不通 )
應改成:
✓ We can sit in the front row if you don't want to sit at the back.
✓ We can sit in the front row unless you want to sit at the back.
✓ We can sit in the front row if you don't want to sit at the back.
✓ We can sit in the front row unless you want to sit at the back.
Ⓒ 選項:除非 Susan 吃了高卡路里的食物,不然她是不會變胖的。
連接詞 unless 意指「if not」。
Ⓒ 選項 = Susan will put on weight if she doesn't eat high-calorie food.
若 Susan 不吃高卡路里的食物,她就會變胖( 文意不通 )
Ⓒ 選項 = Susan will put on weight if she doesn't eat high-calorie food.
若 Susan 不吃高卡路里的食物,她就會變胖( 文意不通 )
應改成:
✓ Susan won't put on weight if she doesn't eat high-calorie food.
✓ Susan won't put on weight unless she eats high-calorie food.
Ⓓ 選項:除非有人有更好的提議,不然我們就去看電影吧。
✓ Susan won't put on weight if she doesn't eat high-calorie food.
✓ Susan won't put on weight unless she eats high-calorie food.
Ⓓ 選項:除非有人有更好的提議,不然我們就去看電影吧。
連接詞 unless 意指「if not」。Ⓓ 選項中的 someone 改成否定時變成 no one = If no one has a better idea, we can go to a movie.,文意通順,Ⓓ 為正解。
答案:Ⓓ
