为你解答.
我们不应当在公共场合制造很大噪声.我们应当使它保持安静.
We (shouldn't make any noise) in public places. We should (keep it quiet).
你看上去很焦虑,莉莉.我能问问发生什么了吗?我明天要交稿,可我还没完成呢!
You look worried, Lily. (Can I ask you what is wrong)? I (have to) hand in my composition tomorrow, but I haven't finished!
如果你遇到坏人,千万不要惊慌.要立即报警.
If you meet some bad guys, (don't panic). You (should) the policeman immediately.
我必须明天来这里吗? 不,不必. 你随时都可以来这儿.
（Must I）come here tomorrow? No, (you needn't). (You can come here) at any time.
虽然她不是很富裕,那个女孩儿也总会把钱借给她的朋友们.
That girl (always lent money to her friends) although she was not rich.
昨天当我路过图书馆时,我看到露西在读书.
Yesterday when I walked (past) the library, I (saw Lucy reading).
她不该让我们等了她这么久.
She (shouldn't have kept us waiting) for such a long time.
当你考试来临时,你不得不晚睡觉.
When the exam is coming, (you have to stay up late).
千万不要自己单独去露营,那将是很危险的.
（Don't go camping alone）,it will（be very dangerous）.
医生过去常建议Tom坚持锻炼,少吃垃圾食品.
The doctor (used to advise Tom to take more exercise and) less junk food.
