【知识点详解】
1. 动词的不规则变化：题目要求写出动词的过去式和过去分词。给出的动词包括become, begin, break, choose, forget, fall, teach, write, send, take。这些动词中，become、begin、break、choose、forget、fall、teach、write、send、take的过去式和过去分词分别是：
- become -> became -> become
- begin -> began -> begun
- break -> broke -> broken
- choose -> chose -> chosen
- forget -> forgot -> forgotten
- fall -> fell -> fallen
- teach -> taught -> taught
- write -> wrote -> written
- send -> sent -> sent
- take -> took -> taken
2. 关于concern的用法：concern可以用作名词或动词。在题目中，concerned是形容词，表示“关心的”或“有关的”。题目中的例句展示了concern的不同用法：
- be concerned with sth. 表示“与……有关”，例句1中是“I am not concerned with that matter any longer.”
- should concern about sth. 表示“应该关心……”，例句2中是“All of us should concern about it.”
- “As far as I'm concerned”是固定搭配，意为“就我而言”或“在我看来”，例句3中是“As far as I'm concerned, too much time in front of TV is a waste of time.”
3. 动词时态和语态：题目中出现了现在完成进行时（如“she will be coming over”）、一般过去时（如“they suffered”）和过去进行时（如“She was suffering from a headache”）等。同时，第9题考察了动词不定式的被动形式“beyond the possibility of recovery”。
4. 完成句子练习：
- 使用动词ing形式表达伴随状态：“She was upset about losing the money when buying clothes.”
- 表达“担心某人”使用“be worried about sb.”：“so my mother is worried about me.”
- “settle down”意为“定居”，第3题答案是：“settled down.”
- “suffer from”表示“遭受……之苦”，第4题答案是：“suffering from.”
- “add up”表示“加起来”，第5题答案是：“add up.”
- “amount to”表示“总计”，第6题答案是：“amount to a total of.”
- “go through”表示“经历”，第7题答案是：“went through.”
- “put down”表示“放下”，第8题答案是：“put down.”
- “on purpose”表示“故意地”，第9题答案是：“on purpose.”
- 使用不定式表目的：“To catch the early bus”；使用连词“so that”引导目的状语从句：“so that we can catch the early bus”；使用目的状语从句且从句主语与主句相同可省略从句主语：“early so we could catch the early bus。”
以上就是广东英语第一轮复习必修1-unit-1单元过关测试题中的主要知识点，包括动词的过去式和过去分词、concern的相关用法以及各种动词短语和时态的应用。通过这些练习，学生可以巩固对英语语法和词汇的理解，提高语言运用能力。
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