您要查找的是不是：
- Is this letter overweight? 这封信是不是超重?
- This letter is ten gram overweight. 这封信超重10克。
- I wonder if this letter is overweight. 这封信不知道超重没有?
- This letter is twenty grams overweight. 这封信超重20克。
- This letter is addressed to my mother. 这封信是写给我母亲的。
- I do not know whether overweight this letter. 我不知道这信是否超重了。
- There is no typing up this letter within five minutes. 不可能在五分钟内打完这封信。
- Is this equipment tested for mechanical aptitude? 这台设备测定了其机械适应性了吗？
- Is this reference book of any use to me? 这本参考书对我有用处吗？
- It is this molecular motion that we call heat. 就是这种分子运动我们称之为热。
- This letter does not pertain to politics. 这封信的内容与政治无关。
- Is this the original drawing or is it a copy? 这是原画还是模本?
- Would you copy this letter for me, please? 请为我复印一下这封信好吗？
- Could you type this letter for me? 你能为我打这封信吗？
- Get this letter off by the first post. 把这一封信交第一班邮递寄出去。
- Is this game a league match or a friendly? 这场比赛是联赛还是友谊赛？
- Is this your first visit to London? 这是你第一次访问伦敦吗？
- Please make a fair copy of this letter. 请把这封信誊写清楚。
- Front desk clerk. Is this Mr. Lie? 柜台服务员，请问你是李先生吗？
- John, is this the right way to operate the machine? 约翰，这是操作这台机器的正确方法吗？
