6. ninth 【解析】句意：吉姆取得了进步，他在班级里排第九名。根据句意可知此处指第九名。故填ninth。
7. fifteenth 【解析】这个宫殿是十五世纪建成的。它看起来很旧却很特别。根据句意可知此处应用序数词。故填fifteenth。
8. eightieth 【解析】句意： 昨天我们全家都来参加祖父的八十岁寿宴。此处应用序数词表示八十岁生日，故填 eightieth。
9. once 【解析】句意：我曾经去过昆明一次，但我永远忘不了它的景色。根据句意可知此处指去过一次。故填once。
10. twice 【解析】句意：在做重大决定之前你必须三思。think twice三思。故填twice。
二、1. A 【解析】考查序数词的用法。句意为：这周星期六是我的十四岁生日。欢迎来我的聚会！生日前应该使用序数词形式，故排除选项C、D；在本空前有物主代词my，不再用定冠词the，故选A。
2. B 【解析】考查数词的用法。句意为：辛迪非常喜欢邮票。迄今为止她已经收集了来自不同国家的两千张邮票。“two”是一个基数词，与“hundred”“thousand”'等数词连用时，这些数词不能加“-s”，其后也不能使用介词“of”。“基数词＋hundred/ thousand / million ＋复数名词”是一种固定结构。故选B。
3. C 【解析】考查序数词的用法。句意“你昨天的假期怎么样？”“完美！那是我奶奶的________ 岁生日。我们举行了一个盛大的家庭庆典。”根据句意可知此处应用序数词，排除A；再根据常识可知grandma的年龄只能选C。
4. D 【解析】考查分数的表达。句意：在我们班有________学生在学校吃午饭。分数的表达为：分子用基数词，分母用序数词，分子大于1，分母用复数。故选D。
5. C 【解析】考查序数词的用法。句意：他爬的如此快以至于他两分钟就爬到了第九层。根据句意可知此处指第九层，应用序数词，序数词前一般要加定冠词the。故选C。
6. A 【解析】考查分数的表达。句意：我的哥哥每年花费他的________的钱买书。分数的表达遵循的原则为“分子基分母序，分子大于一，分母加-s”，故选A。
7．C 【解析】考查数词的用法。句意：这个城市有超过两________的人。hundred，thousand及million这类词后面有of时，用复数；无of时，用单数，并在前面加基数词。故选C。
专题五 介 词
一、短语翻译
1. (2018原创)Brush your teeth ________________ twice a day, in the morning and before going to bed. (至少)
2. (2018原创)The window wasn't broken by someone________________. The wind blew strongly last night. (故意)
3. (2018原创)________________, I was the first one to come to the classroom this morning. (令我惊讶的是)
4. (2018原创) I was ________________ and left my book at home, so I had to go back home. (匆忙)
5. (2018原创)Ann usually goes to school ________________ except on rainy days. (骑自行车)
6. (2018原创) I got this book ________________ in a second-hand bookshop. (偶然)
7. (2018原创)I am ________________ today and it’s my turn to clean the classroom.(值日)
8. (2018原创)I don't need the dictionary ________________ because I know all these words. (目前)
9. (2018预测)There were many goods __________ in the shopping mall last weekend and I bought a T-shirt. (廉价出售)
10. (2018预测)Tony is good at English and he often helps me with my English ________________. (在周末)
二、单项填空
1. (2017上海)We won! The honor belongs ________ all the members of our team. A. by B. of C. at D. to
2. (2017上海)Shirley is still waiting for her flight to New York City ________ the airport.
A. at B. under C. on D. with
3. (2017南京)Over 10, 000 runners joined a half and mini marathons in Xianlin, Nanjing________ May 7, 2017.
A. in B. on C. at D. by
4. (2017德州)—________, there must be life on other planets though none has been discovered.
—I agree with you. The universe is so large after all.
A. To my surprise B. To be honest C. In my opinion D. Again and again 5. (2017襄阳)—Most of the wild animals are ________ because of their bad living environment.
—So we must do something to save them.
A. in need B. on duty C. at work D . in danger 6. (2017泰州)—If someone is ________ your way, what will you do? —I will wait until he or she moves instead of pushing past. A. in B. on C. by D. along
7. (2017 十堰)He did all this ________ silence, and very rapidly. A. at B. in C. with D. of
8. (2017白银)The whole family were ________ agreement about what they should do next.
A. about B. of C. in D. on
9. (2017长沙改编)________April 22nd, people around the world celebrate Earth Day in different ways.
A. In B. At C. On D. By
10. (2018原创)Xiao Jie is my best friend. He always gives me a hand whenever I am________.
A. in person B. in style C. in order D. in trouble
11. (2018原创)It is necessary________ us to help our friends when they need
us.
A. to B. of C. with D. for
12. (2018原创)More and more people in Yunnan choose to go to work ________ bus instead of driving a car.
A. at B. by C. for D. in
13. (2018原创)Jackie Chan and Jet Lee have much ________. And they often play similar roles in the movies.
A. in style B. in turn C. in common D. in fashion 14. (2018原创)—Peter, can you tell me the differences ________ the four words? —Sorry, I don’t know.
A. among B. between C. against D. without
15. (2018原创)There is a big square________ the middle of the park. Many people like doing exercise there.
A. on B. in C. to D. at
16. (2018原创)These pictures will be ________ in November. Lots of visitors will visit them.
A. on show B. on holiday C. on duty D. on business
17. (2018原创)My father has been in Beijing________ business for three days. He will be back in two days.
A. for B. at C. on D. with 18. (2018预测)—Mom, where is our cat?
—Look! She is sleeping________ the sofa. A. for B. on C. with D. in 19. (2018预测)________ the help of my parents, I become confident and outgoing. A. By B. From C. With D. In
20. (2018预测)Lin Xia is shy and she is afraid of giving a speech________. A. in public B. in total C. in danger D. in need
一、1. at least 【解析】句意：每天至少刷两次牙。一次在早上，一次在睡觉前。至少at least。
2. on purpose 【解析】句意：窗户不是有人故意打碎的。昨天晚上的风很大。故意on purpose。
3. To my surprise 【解析】句意：令我惊讶的是，今天早上我是第一个到教室的。 to one's surprise令某人吃惊的是。令我惊讶的是to my surprise。注意句首首字母大写。
4. in a hurry 【解析】句意：我走的很匆忙把书忘在家里了，因此我不得不回去。系动词后可跟介词短语，匆忙in a hurry，为固定搭配。
5. by bike 【解析】句意：安通常骑自行车去学校，除了下雨天。骑自行车by bike和ride a bike。空格后缺方式状语，而不是动词短语，故此处填by bike。
6. by chance 【解析】句意：我偶然在一个二手书店里得到的这本书。偶然by chance，固定搭配。
7. on duty 【解析】句意：今天我值日，轮到我打扫教室了。系动词后可直接跟介词短语。值日on duty。