📚 回英文選單 🏠 回主選單

L4: Sniffing Out More Than Just Bones ── 嗅出的不只是骨頭

龍騰版高中英文 第一冊 第四課｜互動教學講義（高一適用）
⏱️ 建議授課時數：2 小時（120 分鐘）｜依學測 107–115 年命題趨勢設計
📖 課文逐句精講 📝 核心字彙 × 15 ➕ 補充字彙 × 8 🔗 片語 × 6 🗣️ 俚語 × 6 📐 句型 × 5 ✏️ 學生練習 × 10 🎓 老師精講 × 10 📚 段考考古題 × 16 ✍️ 文法手寫練習 × 30 🔀 句子重組 × 10 🎮 單字配對遊戲
💡
本課三大重點速覽

🟦 嗅探犬的超能力

狗的嗅覺遠比人類敏感，因此被訓練成「sniffer dogs（嗅探犬）」，用敏銳的嗅覺去偵測（detect）毒品等隱藏物品。牠們能做的遠不只如此。

🟩 找病樹、救人命

屏東用受訓的狗找出得了褐根病（brown root rot）的樹。狗也能預測（predict）人類疾病：糖尿病婦人 Maria 的狗 Malachi 察覺她血糖過低，喚醒她並幫她拿藥，多次救命。

🟧 訓練的原理

疾病會使動植物與人體產生化學變化並散發特殊氣味。訓練員讓狗反覆接觸（expose）這些氣味，教牠們以坐下或吠叫等行為（behavior）作為警示，完成訓練後分派（assign）特定任務。
📖
課文逐句精講（Reading + 翻譯）
👆 點擊任何一句英文，即可展開「中文翻譯 + 句構分析（主詞／動詞／受詞／補語）+ 重點解析」。
🔍 句構顏色對照： 主詞 S　動詞 V　受詞 O　補語 C　修飾語

本課介紹嗅探犬（sniffer dogs）如何運用比人類敏感許多的嗅覺，替人類偵測毒品、找出病樹、甚至預測人類疾病，並說明牠們接受訓練的原理。

🟦 Part 1｜嗅探犬與牠們的超敏嗅覺
▶Have you ever noticed that dogs are able to smell things that we can't? This is because a dog's sense of smell is far more sensitive than a human's.
你是否曾注意到，狗能聞到我們聞不到的東西？這是因為狗的嗅覺遠比人類敏感許多。
🔍 句構分析 ①Have助V youS noticedV that dogs are able to smell things that we can'tO（名詞子句）
②ThisS isV because a dog's sense of smell is far more sensitive...C（原因）
sense of smell = 嗅覺；far more sensitive than = 比……敏感許多（far 修飾比較級，表「遠遠地」）。
▶For this reason, some dogs are specially trained to become "sniffer dogs," which use their keen sense of smell to detect certain items such as hidden drugs.
基於這個原因，有些狗被特別訓練成「嗅探犬」，牠們運用敏銳的嗅覺去偵測某些物品，例如藏匿的毒品。
🔍 句構分析 ①For this reason副詞 some dogsS are specially trainedV（被動） to become "sniffer dogs"補語
②which關代（先行詞 sniffer dogs） useV their keen sense of smellO to detect certain items不定詞（目的）
keen（敏銳的）、detect（偵測）、item（物品）皆為核心字；such as = 例如。
▶But this isn't the only task that sniffer dogs can accomplish. Here are a few more interesting ways that these amazing animals can help humans out.
但這並不是嗅探犬唯一能完成的任務。以下是這些神奇動物幫助人類的幾種更有趣的方式。
🔍 句構分析 ①thisS isn'tV the only task that sniffer dogs can accomplishC（含關係子句）
②Here引導詞 areV a few more interesting ways...S（真主詞，倒裝）
accomplish（完成、達成）為核心字；help sb. out = 幫助某人（分詞助詞 out 可分開）。
▶In Pingtung, officials in one park use trained dogs to find trees that have "brown root rot" disease. Due to their keen sense of smell, the dogs can detect infected trees.
在屏東，某座公園的官員用受過訓練的狗去找出得了「褐根病」的樹。由於敏銳的嗅覺，這些狗能偵測到受感染的樹。
🔍 句構分析 ①In Pingtung副詞 officials in one parkS useV trained dogsO to find trees that...不定詞
②Due to their keen sense of smell副詞（原因） the dogsS can detectV infected treesO
due to = 由於（後接名詞片語，見句型三）；infected（受感染的）＜ infect（感染）。
▶Once they locate such a tree, they sit down beside it until their trainer hands them a treat as a reward. Workers then dig out these trees before they fall and hurt people.
一旦牠們找到這樣的一棵樹，就會坐在樹旁，直到訓練員遞給牠們零食作為獎勵。工人接著在這些樹倒下傷人之前把它們挖除。
🔍 句構分析 ①Once they locate such a tree時間副詞子句 theyS sit downV beside it until their trainer hands them a treat副詞子句
②WorkersS dig outV（片語動詞） these treesO before they fall...副詞子句
locate（找出……的位置）、reward（獎勵）為核心字；until = 直到；dig out = 挖出。
▶Since they have realized how useful these sniffer dogs can be, officials in parks across Taiwan are inviting them to come and help find the trees with brown root rot disease.
由於他們已了解這些嗅探犬有多麼有用，全台各地公園的官員都正邀請牠們前來，協助找出染上褐根病的樹木。
🔍 句構分析 ①Since they have realized how useful these sniffer dogs can be原因副詞子句
②officials in parks across TaiwanS are invitingV themO to come and help find...受詞補語
Since = 因為（表原因）；across Taiwan = 遍及全台；how useful...can be 為間接問句（名詞子句）。
🟩 Part 2｜嗅出疾病，甚至救人一命
▶Sniffer dogs' ability to detect sickness can be used for more than just locating sick trees. They have also been trained to predict the onset of certain diseases in humans.
嗅探犬偵測疾病的能力，不只能用來找出生病的樹木。牠們也被訓練來預測人類某些疾病的發作。
🔍 句構分析 ①Sniffer dogs' ability to detect sicknessS can be usedV（被動） for more than just locating sick trees副詞
②TheyS have also been trainedV（現在完成被動） to predict the onset of certain diseases不定詞
ability（能力）、predict（預測）、disease（疾病）為核心字；the onset of = ……的發作/開始。
▶Maria Tello, who was a 58-year-old woman with diabetes, was asleep one night. All of a sudden, her dog Malachi opened its eyes and got up.
Maria Tello 是一位罹患糖尿病的 58 歲女性，某天晚上她正睡著。突然間，她的狗 Malachi 睜開眼睛並站了起來。
🔍 句構分析 ①Maria TelloS , who was a 58-year-old woman with diabetes,關係子句（補述） wasV asleepC
②All of a sudden副詞 her dog MalachiS opened...and got upV
all of a sudden = 突然（重要片語＝suddenly）；with diabetes = 患有糖尿病；who 引導補述用法（前有逗號）。
▶By using its powerful nose, it could sense that Maria's blood sugar was dropping to a dangerously low level. Malachi woke her up and then rushed to get her medicine.
藉由使用牠強大的鼻子，牠能察覺到 Maria 的血糖正下降到危險的低水平。Malachi 把她喚醒，然後衝去拿她的藥。
🔍 句構分析 ①By using its powerful nose副詞（方法） itS could senseV that Maria's blood sugar was dropping...O（名詞子句）
②MalachiS woke...up and rushedV to get her medicine不定詞
by + V-ing = 藉由做……（表方法）；level（水平、程度）；wake sb. up = 喚醒某人。
▶It turned out that Malachi saved Maria's life in this way four more times that year. Dogs really are our best friends.
結果證明，那一年 Malachi 用這種方式又救了 Maria 四次。狗真的是我們最好的朋友。
🔍 句構分析 ①It虛主詞 turned outV（片語動詞） that Malachi saved Maria's life...真主詞（名詞子句）
②DogsS really areV our best friendsC
It turned out that... = 結果證明……（重要片語，見句型四）；four more times = 又多四次。
🟧 Part 3｜嗅探犬訓練的原理與展望
▶How can sniffer dogs manage to do the above-mentioned tasks? The answer is that diseases cause chemical changes in plants, animals, and even the human body.
嗅探犬是如何設法完成上述任務的呢？答案是：疾病會在植物、動物、甚至人體內造成化學變化。
🔍 句構分析 ①How can疑問 sniffer dogsS manage to doV the above-mentioned tasksO
②The answerS isV that diseases cause chemical changes...C（名詞子句）
manage to V = 設法做到；above-mentioned = 上述的（複合形容詞）；cause = 造成。
▶These chemical changes usually create special odors, and trainers need to expose their dogs to these smells many times.
這些化學變化通常會製造出特殊的氣味，而訓練員需要讓他們的狗多次接觸這些氣味。
🔍 句構分析 ①These chemical changesS createV special odorsO
②trainersS need to exposeV their dogsO to these smells many times副詞
create（創造）、expose（使接觸、暴露）為核心字；expose A to B = 讓 A 接觸 B；odor = 氣味。
▶The dogs are then taught to perform a certain kind of behavior as an alert, such as sitting down or barking, when they come across these smells.
接著這些狗被教導在遇到這些氣味時，執行某種行為作為警示，例如坐下或吠叫。
🔍 句構分析 ①The dogsS are then taughtV（被動） to perform a certain kind of behavior as an alert不定詞
②when they come across these smells時間副詞子句
perform（執行）、behavior（行為）、alert（警示）為核心字；come across = 偶然遇到（＝encounter）。
▶Once their training is complete, sniffer dogs are assigned to carry out specific duties. As we continue to understand them better, they can help us more.
一旦訓練完成，嗅探犬便被分派去執行特定的任務。隨著我們持續更深入地了解牠們，牠們就能更加幫助我們。
🔍 句構分析 ①Once their training is complete時間副詞子句 sniffer dogsS are assignedV（被動） to carry out specific duties不定詞
②As we continue to understand them better副詞子句 theyS can helpV usO
complete（完成的）、assign（分派）、specific（特定的）為核心字；carry out = 執行；as = 隨著。
▶Who knows in what other ways their sharp sense of smell will be useful to us in the future?
誰知道未來牠們敏銳的嗅覺還會以其他哪些方式對我們有用呢？
🔍 句構分析 ①WhoS knowsV in what other ways their sharp sense of smell will be useful...O（間接問句）
Who knows...? = 誰知道呢（修辭問句，表未知的可能）；sharp sense of smell = 敏銳的嗅覺；間接問句用「疑問詞 + S + V」語序。
📝
核心字彙（課文 15 字）
👆 點擊每個單字卡，展開「字族 + 例句 + 學測連結」。
sensitiveadj.
敏感的；靈敏的
▶
sense (n.) 感官sensitivity (n.) 敏感度be sensitive to 對……敏感
A dog's sense of smell is far more sensitive than a human's.狗的嗅覺遠比人類敏感。
📊 常考 be sensitive to（對……敏感）
keenadj.
敏銳的；熱衷的
▶
a keen sense of smell 敏銳的嗅覺be keen on 熱衷於
The dogs use their keen sense of smell to detect drugs.這些狗用敏銳的嗅覺偵測毒品。
detectv.
偵測；察覺
▶
detective (n.) 偵探detection (n.) 偵測detector (n.) 偵測器
The dogs can detect infected trees.這些狗能偵測到受感染的樹。
📊 detect / detective / detection 字族學測常考
itemn.
物品；項目
▶
an item on the list 清單上的一項
Sniffer dogs detect certain items such as hidden drugs.嗅探犬偵測某些物品，例如藏匿的毒品。
accomplishv.
完成；達成
▶
accomplishment (n.) 成就≈ achieve / complete
This isn't the only task that sniffer dogs can accomplish.這並不是嗅探犬唯一能完成的任務。
diseasen.
疾病
▶
heart disease 心臟病≈ illness / sickness
Dogs can predict the onset of certain diseases in humans.狗能預測人類某些疾病的發作。
📊 spread of disease（疾病傳播）為高頻搭配
infectv.
感染；傳染
▶
infected (adj.) 受感染的infection (n.) 感染infectious (adj.) 傳染性的
The dogs can detect infected trees.這些狗能偵測到受感染的樹。
📊 be infected with（感染……）常考
locatev.
找出……的位置
▶
location (n.) 地點be located in 位於
Sniffer dogs help police in locating dangerous items.嗅探犬協助警方找出危險物品的位置。
rewardn. / v.
獎勵；報酬
▶
reward sb. with sth. 以……獎勵某人rewarding (adj.) 值得的
The trainer hands them a treat as a reward.訓練員遞給牠們零食作為獎勵。
predictv.
預測；預言
▶
prediction (n.) 預測predictable (adj.) 可預測的
Dogs have been trained to predict certain diseases.狗被訓練來預測某些疾病。
behaviorn.
行為；舉止
▶
behave (v.) 行為表現behavioral (adj.) 行為的
The dogs perform a certain behavior as an alert.這些狗執行某種行為作為警示。
📊 animal behavior（動物行為）常入題
alertn. / adj.
警示／警覺的
▶
a bomb alert 炸彈警報stay alert 保持警覺
The dogs perform a behavior as an alert.這些狗以某種行為作為警示。
exposev.
使接觸；暴露
▶
exposure (n.) 暴露；接觸expose A to B 使 A 接觸 B
Trainers expose their dogs to these smells many times.訓練員讓狗多次接觸這些氣味。
📊 expose...to... 介系詞 to 為考點
assignv.
分派；指派
▶
assignment (n.) 作業；任務be assigned to V 被分派去做
Sniffer dogs are assigned to carry out specific duties.嗅探犬被分派去執行特定任務。
specificadj.
特定的；明確的
▶
specifically (adv.) 明確地a specific reason 特定的理由
Sniffer dogs carry out specific duties.嗅探犬執行特定的任務。
📊 specific ↔ general（籠統的）
🔗 課文重點片語
片語中文例句（含翻譯）
due to由於（＋N）Due to their keen sense of smell, the dogs can detect infected trees.由於敏銳的嗅覺，這些狗能偵測受感染的樹。
all of a sudden突然間All of a sudden, her dog Malachi got up.突然間，她的狗 Malachi 站了起來。
turn out結果是；證明是It turned out that Malachi saved Maria's life four more times.結果證明 Malachi 又救了 Maria 四次。
come across偶然遇到The dogs alert when they come across these smells.這些狗在遇到這些氣味時發出警示。
carry out執行；實行Sniffer dogs carry out specific duties.嗅探犬執行特定的任務。
dig out挖出；找出Workers then dig out these trees before they fall.工人接著在樹倒下前把它們挖除。
➕
學測補充字彙（107–115 命題關鍵字）
👆 點擊單字卡展開。這些字皆與課文相關主題（嗅覺、疾病、訓練、動物）相關，並已在近年學測出現。
abilityn.
能力
▶
able (adj.) 能夠的the ability to V 做……的能力
Sniffer dogs' ability to detect sickness can save lives.嗅探犬偵測疾病的能力能拯救生命。
📊 學測常考 the ability to + 原形動詞
performv.
執行；表演
▶
performance (n.) 表演；表現performer (n.) 表演者
Even after his injury, Ben can still perform daily tasks.即使受傷後，Ben 仍能執行日常任務。
📊 perform a task / a play 皆常考
managev.
設法；管理
▶
management (n.) 管理manage to V 設法做到
How do sniffer dogs manage to do these tasks?嗅探犬是如何設法完成這些任務的？
📊 manage to V vs. time management 均為考點
poisonousadj.
有毒的
▶
poison (n./v.) 毒藥；下毒≈ toxic 有毒的
Never eat wild plants because they could be poisonous.絕不要吃野生植物，因為它們可能有毒。
📊 段考高頻字（劇毒的顏色鮮豔動物）
substancen.
物質
▶
a chemical substance 化學物質≈ material 材料
The police found a chemical substance at the scene.警方在現場找到一種化學物質。
creativityn.
創造力
▶
create (v.) 創造creative (adj.) 有創意的creation (n.) 創造物
The students showed great creativity in the contest.學生在比賽中展現極大的創造力。
📊 create 字族（creation/creative/creativity）常整組考
treatmentn.
治療；對待
▶
treat (v.) 治療；對待medical treatment 醫療
Even after the treatment, the patient didn't improve.即使經過治療，病人仍沒有好轉。
surroundv.
環繞；圍繞
▶
surroundings (n.) 周遭環境be surrounded by 被……包圍
The house is surrounded by tall trees.這棟房子被高大的樹木環繞。
📊 be surrounded by 為段考超高頻
🗣️
常用俚語補充（提升口語語感）
👆 點擊每個俚語展開「意思 + 生活例句」。這些俚語與課文主題（狗、嗅覺、察覺、警覺）高度相關，能讓同學口語更道地。
a dog's nose
超靈敏的鼻子／嗅覺
▶
形容某人鼻子很靈、什麼味道都聞得到，如狗一般。
You found the leftover pizza already? You've got a dog's nose!你已經找到剩下的披薩了？你鼻子跟狗一樣靈！
sniff something out
查出、挖出（真相/線索）
▶
字面是「嗅出某物」，引申為「查探、發掘出隱藏的事物或真相」（呼應課名 Sniffing Out）。
Good reporters can sniff out a great story anywhere.好記者在哪都能挖出好題材。
barking up the wrong tree
找錯對象、白費力氣
▶
源自獵犬對著錯的樹吠叫，引申為「搞錯方向、怪錯人、白忙一場」。
If you think I ate your cake, you're barking up the wrong tree.如果你以為是我吃了你的蛋糕，那你可找錯人了。
let sleeping dogs lie
別惹麻煩；別自找事
▶
字面「別吵醒睡著的狗」，意指「別去翻舊帳、別多管閒事以免生事」。
Don't bring up that old argument—let sleeping dogs lie.別再提那件舊爭執了，別自找麻煩。
on high alert
高度警戒中
▶
形容處於高度警覺、隨時準備應變的狀態（呼應課文 alert 一字）。
Airport security was on high alert after the warning.警訊發布後，機場安檢進入高度警戒。
the dog days
一年中最熱的三伏天
▶
指盛夏最炎熱的日子（源自天狼星，非字面「狗的日子」）。
During the dog days of summer, we stayed indoors all day.在盛夏最熱的日子裡，我們整天待在室內。
📐
核心句型文法解析
👆 點擊每個句型標題，展開「公式 + 例句 + 常見錯誤 + 學測重點」。
句型一｜關係代名詞 that / which / who▼
先行詞(物) + that / which + 不完整子句 先行詞(人) + that / who + 不完整子句 （先行詞前有逗號 → 只能用 which / who，不可用 that）

關係代名詞代替先行詞、引導形容詞子句，是本課高頻考點。

Sniffer dogs use their keen sense of smell to detect items that are hidden.
嗅探犬用敏銳嗅覺偵測被藏起來的物品。
Maria Tello, who was a woman with diabetes, was asleep.
患糖尿病的 Maria Tello 當時正睡著。（who 補述用法）
逗號後不可用 that：✗ Maria, that was..., ✓ Maria, who was...。
學測常考 that / which 選擇，以及「逗號＋which/who」補述用法。
句型二｜被動語態 be + p.p.▼
主詞 + be 動詞 + 過去分詞 (p.p.) + (by ...) 現在完成被動：have/has been + p.p.

當主詞是「動作的承受者」時用被動。本課大量出現。

Some dogs are specially trained to become sniffer dogs.
有些狗被特別訓練成嗅探犬。
They have also been trained to predict diseases.
牠們也已被訓練來預測疾病。（現在完成被動）
✗ Sniffer dogs are assign to duties.（assign 要用過去分詞 assigned）。
學測常考主動 vs. 被動判斷；expose、assign、infect 等後常接被動。
句型三｜due to / because of vs. because▼
due to / because of + 名詞(片語) because + 主詞 + 動詞（子句）

最愛被混淆的考點：後面接名詞還是子句，決定用哪個。

Due to their keen sense of smell, the dogs can detect trees.
由於敏銳的嗅覺，這些狗能偵測到樹。（+名詞片語）
Because their sense of smell is keen, the dogs can detect trees.
因為嗅覺敏銳，這些狗能偵測到樹。（+子句）
✗ Due to the dogs are keen...（due to 後不可接子句）；✗ Because their keen smell（because 後要接完整子句）。
學測與段考皆高頻：due to / because of / owing to（+N）↔ because（+S+V）。
句型四｜It turned out that... / 虛主詞 It▼
It turned out that + S + V（結果證明……） It + be + adj. + that / to V（虛主詞代替真主詞）

It 當虛主詞、代替後方真正的主詞（that 子句或不定詞）。

It turned out that Malachi saved Maria's life four more times.
結果證明 Malachi 又救了 Maria 四次。
It is amazing that dogs can smell diseases.
狗能聞出疾病，真是驚人。
✗ That Malachi saved her turned out.（別把冗長 that 子句直接當主詞，用 It 代替）。
turn out (to be) + adj./N 也常考：The performance turned out great.
句型五｜時間/條件副詞子句：once / until / as▼
Once S + V, S + V.（一旦……就……） S + V until S + V.（直到……為止） As S + V, S + V.（隨著……）

這些連接詞後接完整子句，本課三者皆出現。

Once their training is complete, sniffer dogs are assigned duties.
一旦訓練完成，嗅探犬就被分派任務。
They sit down beside it until their trainer hands them a treat.
牠們坐在樹旁，直到訓練員遞給牠們零食。
As we continue to understand them better, they can help us more.
隨著我們更了解牠們，牠們就能更幫助我們。
學測常考 once / until / as / when / while 辨析；as 可表「隨著、當、因為」。
🎓
老師精講題（10 題・文法深度）
👆 點選項即時對錯，按「看完整解析」展開老師講解。適合課堂講授或回家複習。
✏️
學生自我測驗（10 題）
👆 直接點選選項：答對顯示 ✓（綠），答錯顯示 ✗（紅）並標出正解。再按「看完整解析」展開說明。
📚
歷屆段考考古題精選（對應本課 L4）
👆 精選自各校高一第二次段考、落在 L4 範圍的考古題。點選項即時對錯，按「看完整解析」展開。每題末標示來源學校。
✍️
文法填空練習（20 題）
👆 依中文提示，將括號中的字改為正確的文法形式，直接打在空格中；寫完按「看解答」對答案。也適合列印後手寫作答。
1
The dog sniffs out trees have brown root rot disease. (先行詞為物，不加逗號)
這隻狗嗅出染有褐根病的樹木。
✅ 正解：that / which
2
Officials in Pingtung, have used sniffer dogs for years, praised the dogs' amazing sense of smell. (先行詞為人，前有逗號)
屏東的官員多年來都在使用嗅探犬，他們稱讚這些狗驚人的嗅覺。
✅ 正解：who
3
Maria Tello, suffers from diabetes, depends on her dog Malachi to warn her of danger. (先行詞為人，前有逗號，不可用 that)
患有糖尿病的 Maria Tello，仰賴她的狗 Malachi 在危險時發出警告。
✅ 正解：who
4
The special odors diseases produce can be detected by trained dogs. (先行詞為物，無逗號)
疾病所產生的特殊氣味能被受訓的狗偵測到。
✅ 正解：that / which
5
Sniffer dogs are specially to detect the smell of certain diseases. (train)
嗅探犬被特別訓練來偵測某些疾病的氣味。
✅ 正解：trained
6
These dogs have already been to search for infected trees in the park. (assign)
這些狗已經被分派去公園裡搜尋受感染的樹。
✅ 正解：assigned
7
Malachi has been to Maria's scent every day since he was a puppy. (expose)
Malachi 從小狗時期起，每天都被讓其接觸 Maria 的氣味。
✅ 正解：exposed
8
The injured tree was with brown root rot disease last year. (infect)
這棵受傷的樹去年感染了褐根病。
✅ 正解：infected
9
their sensitive noses, dogs can smell odors that humans cannot detect. (+名詞片語)
由於敏銳的鼻子，狗能聞到人類無法偵測到的氣味。
✅ 正解：Due to / Because of
10
Maria's blood sugar was dropping quickly, Malachi rushed to wake her up. (+子句)
因為 Maria 的血糖正在快速下降，Malachi 趕緊叫醒她。
✅ 正解：Because
11
The trees were dug out the danger they posed to park visitors. (+名詞片語)
這些樹因為對遊客造成的危險而被挖除。
✅ 正解：due to / because of
12
these dogs have such a keen sense of smell, they can be trained to detect diseases. (+子句)
因為這些狗有如此敏銳的嗅覺，牠們能被訓練來偵測疾病。
✅ 正解：Because
13
It out that the dog had detected the disease three days before the doctor did. (turn)
結果證明，這隻狗比醫生早三天就偵測到了這個疾病。
✅ 正解：turned
14
It is that a dog's nose can sense chemical changes so quickly. (amaze)
狗的鼻子能如此快速地察覺化學變化，真是令人驚訝。
✅ 正解：amazing
15
It turned out Malachi had saved Maria's life more than once. (連接詞)
結果證明，Malachi 不只一次救了 Maria 的性命。
✅ 正解：that
16
It was that the trained dogs could find infected trees so accurately. (surprise)
這些受訓的狗能如此準確地找到受感染的樹，真是令人驚訝。
✅ 正解：surprising
17
a dog locates an infected tree, it sits down beside it to alert the trainer. (一旦……就……)
一旦狗找到受感染的樹，牠就會坐在旁邊警示訓練員。
✅ 正解：Once
18
Malachi stayed close to Maria she woke up safely. (直到……為止)
Malachi 一直守在 Maria 身邊，直到她安全醒來為止。
✅ 正解：until
19
trainers continue to study these dogs, they discover more diseases the dogs can detect. (隨著……)
隨著訓練員持續研究這些狗，他們發現更多這些狗能偵測到的疾病。
✅ 正解：As
20
The dog waited quietly its trainer gave the command to search. (直到……為止)
這隻狗安靜地等待，直到訓練員下達搜索的指令。
✅ 正解：until
🔄
句子改寫練習（10 題）
👆 依指示將兩句合併或改寫成一個正確的英文句子，寫在下方欄位中；寫完按「看參考答案」對答案。
21
The trees have brown root rot disease. + Sniffer dogs can detect the trees.
請用關係代名詞 that / which 合併成一句。
✅ Sniffer dogs can detect the trees that/which have brown root rot disease.
22
Maria Tello depends on her dog. + Maria Tello has diabetes.
請用關係代名詞 who（補述用法，加逗號）合併成一句。
✅ Maria Tello, who has diabetes, depends on her dog.
23
Trainers train sniffer dogs to detect diseases.
請將主動句改寫為被動語態。
✅ Sniffer dogs are trained by trainers to detect diseases.
24
The center has assigned Malachi to help Maria every day.
請將主動句改寫為現在完成被動語態。
✅ Malachi has been assigned to help Maria every day.
25
The dogs have a keen sense of smell. + They can detect infected trees quickly.
請用 due to 合併成一句（due to 後接名詞片語）。
✅ Due to their keen sense of smell, the dogs can detect infected trees quickly.
26
Malachi rushed to get medicine. + Maria's blood sugar was dropping fast.
請用 because 合併成一句（because 後接子句）。
✅ Malachi rushed to get medicine because Maria's blood sugar was dropping fast.
27
Malachi had saved Maria's life several times. This was surprising to everyone.
請用 It turned out that... 改寫成一句。
✅ It turned out that Malachi had saved Maria's life several times.
28
That a dog can predict a disease is amazing.
請用虛主詞 It 改寫此句（避免用冗長的 that 子句當主詞）。
✅ It is amazing that a dog can predict a disease.
29
The dogs finish their training. + They are assigned specific duties.
請用 Once 合併成一句。
✅ Once the dogs finish their training, they are assigned specific duties.
30
The dogs sit beside the tree. + Their trainer gives them a reward.
請用 until 合併成一句。
✅ The dogs sit beside the tree until their trainer gives them a reward.
🔀
句子重組（10 題）
👆 依序點選下方詞組，把句子排回正確順序；點錯可再點一次移回。排好後按「檢查」看對錯，或按「看正解」直接顯示答案。
🎮
單字配對遊戲（核心字彙 15 字）
👆 先點左邊的英文單字，再點右邊對應的中文意思；配對正確會變綠色鎖定，配對錯誤會閃紅重來。全部配對完成即過關！
配對成功：0 / 15⏱ 00:00
龍騰高中英文 第一冊 第四課｜互動教學講義