May wish to set some time limits for yourself. Continuous long-term study can easily make yourself bored. At this time, you can divide your homework into several parts, and control each part for a limited time, such as completing this exercise within one hour, completing the test before eight, etc. , This not only helps to improve efficiency, but also does not produce fatigue. If possible, gradually shorten the time used, and soon you will find that the work that could not be completed in one hour before is completed in forty minutes.