1. I wonder if you could tell me more about the trip. 我不知道你是否方便多告诉我一些有关旅行的事。 2. It is certain that if there are fewer people driving, there will be less air pollution. 可以肯定,如果开车的人少一些,空气污染就一定会减少。 3. I personally feel that teacher is the most important profession in the world. 我个人认为教师是世界上较重要的职业。 4. We can’t imagine what the world is going to be without purified water. 我们无法想象没有纯净的水,这个世界会变成生么样子。 5. I was walking east along Park Road, when an elderly man came out of the park on the other side of the street. 当我沿着公园路往东走的时候,有一个老人在街的另一边从公园里走出来。