假设你是李华，4月18日国家植物园开放，你的英籍教师Jim将开设"国家植物园生物多样性研究"选修课。你想参加这一选修课，请你给Jim写一封邮件，咨询以下内容：
1. 选修原因；
2. 课程相关信息（时间、方式……）；
3. 表达期待。
注意：1. 词数100左右；
2. 开头和结尾已给出，不计入总词数。
提示词：选修课 optional course
国家植物园 China National Botanical Garden
得分：评阅中 平均得分：-
【导语】本篇书面表达属于应用文，要求考生给英籍教师Jim写一封邮件，向他咨询“国家植物园生物多样性研究”选修课相关情况。
【详解】1.词汇积累 对……感兴趣：take interest in →be interested in 开始：begin →start 为……做准备：prepare for →make preparations for 期望：look forward to →expect
2.句式拓展 句式转换 原句：I’m looking forward to a response from you at your earliest convenience. 拓展句：I’d greatly appreciate it if you could reply me at your earliest convenience.
【点睛】[高分句型1] Knowing you are setting an optional course about biodiversity in China National Botanical Garden, I take great interest in it since we can learn something that is not taught in textbooks and will have a great deal of extracurricular practical activities. (运用了现在分词作状语和that引导的定语从句)
[高分句型2] I’d be grateful if it’s so kind of you to give me some essential information about it. (运用了if引导条件状语从句)