使我高兴的是：to my joy.

例：

1、To my joy, the meeting was put off.

让我高兴的是，会议推迟了。

2、To my joy, the plant did look exactly like what we were looking for. All of us felt very happy.

使我们高兴的是，这种植物跟我们要找的那种确实是一模一样，我们都感到非常高兴。

3、Under the hope a month arrives, brings belongs to my joy, carries off my pain, lets my relaxed somewhat.

希望下个月到来的时候，带来属于我的喜悦，带走我的痛苦，让我轻松一些。

4、To my joy, I 'm on my vacation now. I can relax down freely.

现在放假了，终于可以好好放松下了。