1·We should get into the habit of previewing and reviewing.
我们应该养成预习和复习的习惯。
2·When previewing a new lesson, make marks where you have questions.
预习新课时，在你有问题时做个记号。
3·During the experiment, we design teaching methods with Concept map in previewing, reviewing, and working out problem, making survey among the students on Concept map before and after the experiment.
教学实验过程中设计了在学生预习、复习、解题环节中应用概念图的教学策略，并对实验前后学生的学习行为和结果进行问卷调查，了解学生对概念图及其应用的认识与态度。
4·Third, reviewing and previewing are necessary.
第三，复习和预习是必要的。
5·Previewing future lessons allows you find new and important vocabulary and learn what it means.
预习可以帮助你找到新的且重要的单字。