1) You may feel awkward when you start learning how to drive, but it’s easy once you get the hang of it. 2) As one of those who have lived through two world wars, Uncle Sam understands the value of life far better than his grandchildren. 3) When you are learning driving a car, it makes a difference whether you have a good teacher or not. 4) He is so stubborn. We have no idea how to persuade him to accept our proposal. 5) Be more concerned with your character than your reputation (名声), because your character is what you really are, while your reputation is just what others think you are. 6) To our surprise, Mr. Thompson slipped over an important point in his analysis — the cause and effect of the problem. 7) To my pleasant surprise, I ran into my best friend Helen in Paris last week. 8) I hit the tree behind me when I put the car in reverse without looking back first. 9) I’ll leave you alone here so you can mull over the problem and make a decision on your own.