1. The preparatory work for the conference had been undertaken at two meetings of experts. 在两次专家会谈中，人们已经着手了会议的筹备工作。
2. We are pushing our kids to get good grades, take SAT preparatory courses and build resumes so they can get into the college of our first choice. 我们督促孩子取得好成绩、参加 SAT 预备课程、制作简历，这样他们就能进入到我们首选的大学。
3. To attach the preparatory to the senior school these three classes were known officially, on speech days and in reports, as upper, middle, and lower second. 作为高中的预备班，在演讲日和报告中，这三个班被正式称为上、中、下二班。
4. In the new global economy, students who fail to finish the ninth grade with passing grades in college preparatory coursework are very unlikely to graduate on time and go on to get jobs. 在新的全球经济中，未能完成九年级学业并通过大学预科课程的学生很难按时毕业并找到工作。
5. At least a year's preparatory work will be necessary before building can start. 在建造开始之前至少需要一年的准备工作。
