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Unit 8 It must belong to Carla. 單元培優練習題
一、單項選擇（每題 1 分，共 10 分）
（ ）1. This coat ______ be Tom's. It's too small for him.
A. can't B. must C. could
（ ）2. —Whose guitar is this
—It ______ belong to Alice. She plays the guitar.
A. must B. might C. can't
（ ）3. The shoes under the bed ______ be Mary's. They're too big for her.
A. must B. can't C. could
（ ）4. That man ______ be Mr. Smith. He has gone to London.
A. mustn't B. can't C. may not
（ ）5. —Is this your eraser
—No, it ______ be mine. I don't have an eraser like this.
A. must B. can C. can't
（ ）6. The notebook ______ belong to Jane. Her name is on the cover.
A. must B. might C. can't
（ ）7. This bike ______ be Peter's. He bought a new one yesterday.
A. must B. can't C. might
（ ）8. The basketball ______ be the boys'. They like playing basketball.
A. must B. could C. can't
（ ）9. —Who is singing in the classroom
—It ______ be Lucy. She likes singing.
A. must B. can't C. may
（ ）10. The scarf ______ be my mother's. She has a scarf like this.
A. must B. might C. can't
二、用所給詞的正確形式填空（每題 1 分，共 10 分）
1. The key ring ______ (be) my sister's. She has a lot of key rings.
2. This schoolbag ______ (belong) to the girl. There are some textbooks with her name in it.
3. The sunglasses ______ (be) his. He doesn't like wearing sunglasses.
4. The hair clip ______ (belong) to Lily. She has long hair.
5. The umbrella ______ (be) my mother's. She took it this morning.
6. These gloves ______ (be) my father's. They look like his.
7. The wallet ______ (be) Tom's. His wallet is black.
8. The CD player ______ (belong) to my brother. He loves music.
9. The hat ______ (be) Mary's. She often wears hats.
10. The pencil case ______ (be) mine. I put my name on it.
三、句型轉換（每題 2 分，共 10 分）
1. This T-shirt must be John's.（改為否定句）
This T-shirt ______ be John's.
2. The book might belong to Lucy.（改為一般疑問句）
______ the book ______ to Lucy
3. The football must be the boys'.（對劃線部分提問）
______ football must it be
4. The bag belongs to Tom.（改為同義句）
The bag is ______.
5. This watch may be my father's.（改為同義句）
This watch ______ ______ my father's.
四、閱讀理解（每題 2 分，共 10 分）
There is a small park near my house. One day, I went there to take a walk. I saw a bag on the ground. It was a very nice bag. I picked it up and looked inside. There was a wallet with some money in it, a set of keys, and a mobile phone. I wondered whose it could be. Maybe it belonged to the person who was sitting on the bench nearby. But when I asked him, he said it wasn't his. Then I saw a girl running around looking for something. I went up to her and asked if she had lost a bag. She said yes. I showed her the bag and she was very happy. She said it must be hers because her wallet, keys and phone were all in it.
（ ）1. Where did the writer find the bag
A. On the bench. B. In the park. C. Near his house.
（ ）2. What was in the bag
A. A wallet, some keys and a book.
B. A wallet, some money and a mobile phone.
C. A purse, some keys and a notebook.
（ ）3. Who did the writer first think the bag might belong to
A. The girl. B. Himself. C. The man on the bench.
（ ）4. What did the girl lose
A. A bag. B. A wallet. C. A phone.
（ ）5. Why did the girl think the bag was hers
A. Because the bag was very nice.
B. Because her things were in it.
C. Because she saw the writer pick it up.
五、語法填空（每題 1 分，共 10 分）
閱讀下面短文，在空白處填入一個適當的詞，或填入括號中所給單詞的正確形式。
One day, when I was walking in the street, I saw a strange box. It was made of wood. It looked very old. I was very curious and wanted to know what was inside. I thought it ______ (may) be something valuable. As I got closer, I saw some words on the box. It said "For the person who needs it". I was really surprised. I decided to open it. There were some clothes and some food in it. I guessed it ______ (be) left by someone kind. I didn't know who it belonged to, but I knew it ______ (should) be given to those who were in need. So I took it to the local community center. The people there were very happy and thanked me. They said it ______ (can) help a lot of people. From then on, I
六、綜合填空（每題 1 分，共 10 分）
guess, possible, owner, valuable, search
I found a lost wallet on my way home. I opened it and ______ (guess) the ______ (owner) might be very worried. There was some money and an ID card in it. The ID card was very ______ (valuable) for finding the owner. I decided to ______ (search) for the owner. I asked some people nearby if they knew the person in the photo. It was ______ (possible) that I could find the owner quickly. Finally, I found the owner and returned the wallet to him. He was very thankful.
七、書面表達（15 分）
假如你在學校圖書館撿到了一個書包（schoolbag），請你根據以下提示寫一篇短文，推測書包的主人是誰，并描述你尋找主人的過程。
提示：
1. 書包的顏色、款式等特征；
2. 書包內的物品；
3. 你推測的主人是誰，以及你的理由；
4. 你是如何找到主人并歸還書包的。
要求：
5. 短文須包括所有提示內容，可適當發揮；
6. 詞數：80 - 100 左右。
練習題答案
一、單項選擇
1. A
解析：根據“too small for him”可知，這件外套不可能是湯姆的，表否定推測用 can't。
2. B
解析：由“She plays the guitar.”可知，吉他可能是愛麗絲的，表不太確定的推測用 might。
3. B
解析：“too big for her”說明鞋子不可能是瑪麗的，用 can't 表否定推測。
4. B
解析：“has gone to London”表示那個人不在這，所以不可能是史密斯先生，用 can't。
5. C
解析：根據答語“我沒有這樣的橡皮”可知，這不可能是我的，用 can't。
6. A
解析：“Her name is on the cover.”說明筆記本肯定是簡的，用 must。
7. B
解析：“He bought a new one yesterday.”可知這輛自行車不可能是彼得的，用 can't。
8. A
解析：“They like playing basketball.”所以籃球肯定是男孩們的，用 must。
9. C
解析：“She likes singing.”但不確定一定是露西在唱歌，用 may 表可能。
10. B
解析：“She has a scarf like this.”圍巾可能是媽媽的，用 might。
二、用所給詞的正確形式填空
1. might be
解析：由“She has a lot of key rings.”可知不太確定，用 might be。
2. must belong
解析：“There are some textbooks with her name in it.”說明書包肯定是女孩的，用 must belong。
3. can't be
解析：“He doesn't like wearing sunglasses.”所以這副太陽鏡不可能是他的，用 can't be。
4. might belong
解析：“She has long hair.”頭發夾可能是莉莉的，用 might belong。
5. must be
解析：“She took it this morning.”說明傘肯定是媽媽的，用 must be。
6. might be
解析：“They look like his.”手套可能是爸爸的，用 might be。
7. can't be
解析：“His wallet is black.”錢包不可能是湯姆的，用 can't be。
8. must belong
解析：“He loves music.”CD 播放器肯定是哥哥的，用 must belong。
9. might be
解析：“She often wears hats.”帽子可能是瑪麗的，用 might be。
10. must be
解析：“I put my name on it.”鉛筆盒肯定是我的，用 must be。
三、句型轉換
1. can't
解析：must 的否定形式為 can't。
2. Might; belong
解析：might 開頭的一般疑問句，將 might 提前，動詞用原形。
3. Whose
解析：對所屬關系提問用 whose。
4. Tom's
解析：belong to sb. = be sb.'s
5. might be
解析：may be = might be
四、閱讀理解
1. B
解析：根據“One day, I went there to take a walk. I saw a bag on the ground.”可知在公園撿到的包，選 B。
2. B
解析：由“There was a wallet with some money in it, a set of keys, and a mobile phone.”可知選 B。
3. C
解析：文中提到“Maybe it belonged to the person who was sitting on the bench nearby.”，所以作者一開始認為包可能是長椅上那個人的，選 C。
4. A
解析：“She said yes. I showed her the bag and she was very happy.”說明女孩丟失的是包，選 A。
5. B
解析：“She said it must be hers because her wallet, keys and phone were all in it.”可知女孩認為包里有她的東西所以是她的，選 B。
五、語法填空
1. might
解析：表示不太確定的推測，用 might。
2. must have been
解析：“I guessed...”說明是對過去情況的肯定推測，用 must have been。
3. belonged
解析：文章整體是過去時態，“it belonged to...”表示“它屬于...”。
4. to
解析：belong to 是固定搭配，意為“屬于”。
5. should
解析：表示“應該”，用 should。
6. could
解析：表示“能夠，可以”，用 could。
7. was walking
解析：“be doing... when...”是固定句型，意為“正在做...這時...”。
8. looked
解析：文章是過去時態，“look”的過去式為“looked”。
9. being
解析：“about”是介詞，后接動詞 -ing 形式。
10. was found
解析：“package”與“find”是被動關系，且文章是過去時態，用一般過去時的被動語態“was found”。
六、綜合填空
1. guessed
解析：根據語境，這里是“猜測”，且文章是過去時態，用 guessed。
2. owner
解析：“錢包的主人”，用 owner。
3. valuable
解析：“be valuable for...”表示“對...有價值”，這里指身份證對找到主人有價值。
4. search
解析：“decide to do sth.”決定做某事，“search for...”尋找...，用 search。
5. possible
解析：“it was possible that...”表示“有可能...”。
七、書面表達
Yesterday, I picked up a schoolbag in the school library. It was a blue and black schoolbag with a cartoon pattern on it. When I opened it, I found some textbooks, a notebook and a pencil case. The textbooks had the name "Jack" written on them. I guessed it must belong to Jack, who is my classmate and loves blue. He always takes a lot of books with him.
I asked some classmates if they knew where Jack was. Finally, I found him in the classroom. I returned the schoolbag to him. He was very happy and thanked me. I felt really good that I could help him.

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