我诚挚地劝说他合作。用英语怎么说？

我诚挚地劝说他合作。

I earnestly advised him to cooperate.

earnestly

adv. 认真地，诚挚地，热切地；

例句
In 1990, we were all earnestly assured that property values could only go up.
1990年时我们都得到信誓旦旦的保证说房地产只可能升值。

advised

adj. 明智的，审慎的，经过考虑的，深思熟虑的；v. 劝告，提建议( advise的过去式和过去分词 )，（商业）通知，报告；

例句
We advised newspapers not to accept the advertising...
我们建议报社不要承接这项广告。

him

pron. (he的宾格)他；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

cooperate

vi. 合作，配合，协助；v. 合群，互助，结合；

例句
The two airlines will cooperate on ticketing and schedules.
两家航空公司将在票务和航班安排上展开合作。