③ urge that ... 强烈要求......(句4) They urged that the library be kept open during the vacation. ，从句中谓语部分用should + 动词原形或只用动词原形。

Step ⅡExercises

Deal with the useful words and expressions in this unit and let the Ss do some exercises to master their meanings and usages.

Step Ⅲ Homework

Remember the new words and expressions.