You are asking someone to make sure that a particular thing happens or takes place.
你正在问某人确定一个特定的事情出现或发生。

Here are some examples: 这里有一些例子：

"Please make sure that she wakes up on time." 

请确保她按时醒来。

"Please make sure that she gets to school." 

请确保她能到学校。

"Please make sure that dinner is ready when we get home." 

到家时请务必准备好晚餐。

"Please make sure that your assignment is done." 

请确保你的任务完成了。

"Please make sure that the water is not too hot." 

请确保水不是很烫。

"Please make sure you cook the meat long enough." 

请确保你把肉煮了足够长的时间。

"Please make sure that she is getting along with her new friends." 

请确保她和她的新朋友相处得很好。

"Please make sure that we leave on time." 

请确保我们准时离开。

"Please make sure you record our favorite TV show." 

请确保你记录了我们最喜欢的电视节目。

"Please make sure that you don't stay out too late." 

请务必不要在外面呆得太晚。