1. Teachers often chaperon their classes on field trips.
   在野外郊游时老师常看护着班上的学生。
2. There are ten English classes listed in the timetable.
   课表上列有10节英语课。
3. We may enrol another two classes of 20 students each.
   我们可以再招收两个班, 每班20个学生。
4. Many schools use small classes as their trump card in marketing campaigns.
   很多学校在做宣传活动时都把小班授课当成他们的王牌。
5. In this book we have tried to typify the main classes of verbs.
   在本书中，我们力图以明显的方式把动词划分几大类。
6. The new grouping of classes means larger numbers in each class.
   这次重新编班，意味着每个班的人数增多了。
7. We have a dictation every English class.
   每次上英语课我们都进行听写测验。
8. The lower classes are always with us.
   我们总是和下层社会人民在一起。
9. Officers are entitled to travel first class.
   官员有权坐头等舱。
10. New tasks now confronted the working class.
    新任务摆在工人阶级面前。
11. The teacher scowled at his noisy class.
    老师对他那喧闹的课堂板着脸 。
12. Please distribute the examination papers round the class.
    请把考卷发给全班同学。
13. The teacher set the class a comprehension test.
    老师对全班同学进行了一次理解力测验。
14. We use a globe in our geography class.
    我们在地理课上使用地球仪。
15. The arrival of the teacher silenced the class.
    教师的到来使全班安静下来。
16. She paces the whole class in English study.
    她在学习英语方面为全班树立榜样。
17. Marx inveighed against the evils of the property-owning classes.
    马克思猛烈抨击了有产阶级的罪恶。
18. She paces the whole class in studying English industriously.
    她在刻苦学习英语上给全班同学树立了榜样。
19. This preferential ticket entitles you to travel first class.
    "凭这张优惠票,你可以坐头等舱旅行。"
20. A recorder is often used in our English class.
    英语课堂上我们经常使用录音机。

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