这是我在书中看到的`希望大家能够帮助我`我万分感谢大家``
while the children have fun ,parents can take dance lessons on teh beach .不是说while引导时间段吗``所以应该是while the children are having fun 呀``我非常不明白``还有希望大家在解决这题的同时,告诉我when 和while 的区别```
不是``是你们把问题看漏了``还有一题是为什么要用while the children have fun而不能用while the children are having fun