【知识点详解】
1. **词汇理解**
- **agree**：同意，赞同；**agreement**：协议，契约
- **govern**：统治，治理；**government**：政府
- **head**：领袖，领导人
- **representative**：代表；**represent**：代表
- **region**：地区，区域；**regional**：地区的，区域性的
- **geography**：地理，地理学；**geographical**：地理的
- **produce**：产品，农产品
- **feature**：特点，特征
2. **选词填空**
- **in front of**：在...前面
- **at the moment**：此刻，目前
- **in terms of**：就...而言，从...方面来说
- **on the other hand**：另一方面
- **little by little**：逐渐地
- **belong to**：属于
- **have some control over**：对...有一定的控制力
- 句子填空答案：
1. The car **in front of** me stopped suddenly and I had to brake.
2. Do wolves **belong to** the canine species?
3. Teachers should **have some control over** the discipline in class.
4. The market is rather depressing **at the moment**.
5. **In terms of** money, he's quite rich.
6. His English is improving **little by little** with the teacher's help.
7. **On the other hand**, as consumers we all can make contributions by selecting environmentally friendly clothing.
3. **动词 sign 的用法**
- **sign** 作为动词，表示签署，签名。例如：I haven't signed the contract yet. I'm still thinking about it.
- **sign** 作为名词，可以表示签字，签名，也可以表示标志，信号。例如：The police signed to the driver that it was time to go.（警察示意司机该走了）
4. **sign 相关短语**
- **sign in/out**：签到/退，如：Every student must sign in when he/she comes back to the dormitory, and sign out when he/she leaves.
- **sign to sb. to do sth.**：示意某人做某事，如：The doctor signed to the patient to sit down.
- **a sign of**：...的标志，如：Headaches may be a sign of stress.
- **sign up for**：报名参加...，如：She signed up for learning dance when she was six.
5. **法国和德国与协议**
- France and Germany aren't going to sign the agreement. 这句话表明法国和德国不打算签署协议，涉及国际关系中的外交决策和协议签署过程。
通过以上内容，我们可以了解到本节课程主要涵盖了高中英语的词汇学习，包括单词的拼写和词义，以及如何在不同语境中正确使用这些词汇。同时，还涉及到动词 "sign" 的多种用法及其相关短语，这对于理解和应用英语语言是非常关键的。此外，这个话题也提醒我们在学习中要注意实际运用，比如通过完成填空练习来提升语言技能。
