正确理解汉语是英语翻译的关键。“高兴”是形容词,“帮助”是动词,这就提示这句话翻译时可能采取“系表结构+动词不定式”的结构。
这句话具体可以翻译为:
I am quite happy to help you.
I'm very glad to have helped you
I'm very glad that I can help you
I AM HAPPY TO HEALR YOU
I'am glad to help you