新概念英语第一册 Lesson 129
一、核心知识点
1. 动词短语辨析
（1）wave to sb. & wave at sb.
- wave to sb.：朝某人挥手，强调动作的方向，侧重向对方传递动作意图
- 例句：She waved to her friends when the bus passed by.
- wave at sb.：朝某人挥手，强调动作的目标/范围，侧重指向具体对象
- 例句：The chairman is waving at the crowd.
- 同类用法拓展：
- point to：指向（侧重方向）→ Point to the east.
- point at：指着（侧重目标）→ Point at me.
2. 重点句型与语法
（1）want 的用法
- want sb. to do sth.：想要某人做某事（动词不定式作宾语补足语）
- 例句：I want to go to the supermarket with you.
- 例句：I want him to help with the housework.
（2）Do you think...？插入语用法
- 结构：Do you think 作插入语，不改变句子主干语序，同类插入语还有 I'm afraid 等
- 例句：Who do you think is on duty today?
- 例句 It's going to rain,I'm afraid.
- 例句：Who do you think you are?
（3）must have been doing
- 含义：对过去进行中的事情做出肯定猜测，表示“当时一定在做某事”
- 例句：You must have been driving at 70 miles an hour.
（4）drive at + 速度
- 含义：以……的速度行驶
- 例句：Tom drives at least 100 kilometers an hour.
（5）can't have been doing
- 含义：对过去进行中的事情做出否定猜测，等同于 can't have been + 动词现在分词
- 例句：I can't have been running so fast on the road.
（6）That's why...
- 含义：这就是为什么……，用于解释原因
- 例句：That's why I didn't see the sign.
- 例句：He didn't understand the question. That's why his answer was not to the point.
（7）had better 的用法
- 结构：had better do sth.（最好做某事）；had better not do sth.（最好不做某事），后接动词原形
- 例句：You'd better not do it again.
- 例句：You'd better wash your hands first.
- 例句：You'd better not eat too much junk food.
（8）advice 相关搭配
- take one's advice：听取某人的建议，强调主动采纳
- 例句：I'll take your advice and sleep early.
- follow one's advice：遵从某人的建议，强调跟随、执行
- 例句：Be mindful to follow my advice.
切记按照我的意见去做！
二、练习
（一）. 根据中文意思写出下列单词
1. 跑道 n.________
2. 罚款 v.________
3. 标识，指示 n.________
4. 招手 v.________
5. 超越 v.________
（二）. 翻译下列句子
1. 我是以每小时80英里的速度赶上你的。
________________________________________
2. Didn't you see the speed limit?
________________________________________
3. 下次你最好还是听从我的劝告。
________________________________________
（三）. 圈出正确答案
1. I will certainly be ______.
A. more carefully B. more careful
C. carefuler D. carefully
2. I think you'd better not ______ late very often.
A. are B. were C. being D. be
3. "I won't ______ you this time, but be careful next time."
A. change B. cost C. charge D. spend
4. Let me ______ your driving license.
A. see B. look C. watch D. find
5. You must ______.
A. have dreamed B. have been dreaming C. dream D. be dream
三、练习答案
（一). 单词拼写答案
1. runway
2. fine
3. mark
4. wave
5. overtake
（二).句子翻译答案
1. I overtook you at a speed of 80 miles per hour.
2. 你没看到限速标志吗？
3. You'd better take my advice next time.
（三). 选择题答案
1. B
2. D
3. C
4. A
5. B
新概念英语第一册 Lesson 130
一、核心知识点
（一）情态动词 must / can't 表推测用法
1. 对现在/一般情况推测
- 肯定：must（一定）
- 否定：can't（不可能）
2. 对过去动作推测
- 肯定：must have done（过去一定做了某事）
- 否定：can't have done（过去不可能做了某事）
- 例句：He must have closed the door.
He can't have stolen the wallet.
3. 对过去正在进行**的动作推测
- 肯定：must have been doing（过去一定正在做某事）
- 否定：can't have been doing（过去不可能正在做某事）
- 例句：I must have been dreaming just now.
I saw her in the office at 8:00 a.m.,she can't have been sleeping then.
二、练习
（一）用 had to / can't / must 填空
1. He didn't get up early this morning. He ______ have been ill.
2. I lost my pen, so I ______ buy a new one.
3. I don't think she was Austrian. She ______ have been German.
4. I ______ have left my keys at home, because I remember putting them in my bag.
5. She answered my phone, so she ______ have been angry with me.
6. He forgot his case, so he ______ return home.
7. He didn't come to the office this morning, he ______ stay at home.
（二）圈出正确答案
1. The soup is salty. You ______ a lot of salt in it.
A. can put B. can't put
C. must have put D. should put
2. They ______ have eaten all the cake. There's still a big slice left.
A. mustn't B. can't C. may not D. needn't
3. She didn't open the door, she ______ sleeping.
A. must have been B. was
C. can't be D. must be
4. Who ______ I can trust?
A. you think B. did you think
C. think you do D. do you think
三、练习题答案
（一）填空答案
1. must
2. had to
3. must
4. can't
5. can't
6. had to
7. must
（二）选择答案
1. C
2. B
3. A
4. D
