You will pass this course only if you study.
只要你学，你就会通过这门课。
Children may enter the club only if they are accompanied by adults.
只要孩子们有大人陪同就可以参加俱乐部。
The students at the university can take up part-time job only if it doesn’t interfere with their studies.
只要不影响学业，这所大学的学生可以从事兼职工作。
