【答案解析】[参考范文]
Notice
Volunteers are needed for a summer camp to be held on our campus in early July. The camp is meant to help high school students prepare themselves for the coming university study and life, and will last a week.
Some activities include Campus Tour, lab experiment, and an indoor tennis match. An online exchange with a group of American high school students will also be held．
So volunteers are required to be familiar with campus life and lab procedures. Also, fluent communication in English is needed. Besides, we request volunteers to be available for camp work for seven days.
Please call 123456 for application and information of the interview. You are highly welcome to join US.
Summer Camp Organizer
May 1, 2015
[解析]
[审题]
1．从提示看，这篇应用作文要求写“招聘”公告(notice)，需要注意“公告”的格式与书信不同。
2．内容包括公告目的、夏令营活动、报名要求，以及联系方式等。
3．公告的句式要求正式、客观，没有主观语气。
[句式借鉴]
1．So volunteers are required to be familiar with campus life and lab procedures. Also, fluent communication in English is needed. Besides, we request volunteers to be available for camp work for seven days. (要求志愿者熟悉校园生活和实验室程序。同时，需要能够熟练使用英文交流。此外，要求志愿者能够参与一周的活动。)考生应注意几个细节：are required to...，is needed，we request...这些都是比较委婉表达“要求”的说法。尽管是公告，但是语气不能生硬。
2．Please call 123456 for application and information of the interview. You are highly welcome to join US. (面试申请和相关信息请致电123456。欢迎大家加入。)应注意结尾的礼貌用语。