I hope you don't mind my asking, but I wonder if it might be at all possible for you to lend me your car.
希望你不介意我的请求,我不知道你是否可以把车借我用一用。
About once a month. Not too often, because neither of us has much time. We both have too much work to do.
大约每月一次。不太经常写信,因为我俩的时间都很紧。我们都有做不完的事。