1. They kissed passionately when she arrived.
    她一来到, 他们就热烈亲吻.

2. He is speaking passionately.
    他在热情地讲着话.

3. An individual human existence should be like a river----small at first, narrowly contained within its banks, and rushing passionately past boulders and over waterfalls.
    个人的存在应该像一条河流，开始很小，被紧紧地夹在两岸中间，接着热情奔放地冲过巨石，飞下瀑布。