高一英语第二十五单元 At the Conference

5.Would you mind giving a talk today about DNA ?
能不能请你今天作一个关于DNA的报告？
“Would you mind doing sth.”是一个日常交际用语，表示礼貌地提出请求。例如：
Would you mind opening the window ?请你把窗户打开好吗？
Would you mind fetching me some water, please ?请你给我打点水来好吗？
Would you mind sending him a message for me ?请你帮我带个口信给他好吗？
6.You must be joking !你一定是在开玩笑吧！
must表示推测，作“一定”“想必”解。must后用现在进行时be joking，表示此刻正在进行的动作。例如：
Where are they ? They must be playing football on the playground now.
他们在哪儿呢？他们一定是正在操场上踢足球了。
It’s ready seven o’clock. She must be waiting for you in her house now.
已经7点，她肯定是正在家里等你呢。
7.That may be so.这是有可能的。
情态动词“may”在句中作“可能”解，也具有推测的含义，但语气不像must那样肯定。例如：
He may be right.他可能是对的。
They may come here tomorrow.他们明天可能会到这里来。
She may be still waiting for us.她可能还在等我们呢。(比较：She must be still waiting for us.他一定还在等我们。)
8.“There must be some mistake,”said Dr Baker.贝克博士说，“准是出了什么差错了。”
句中some作“某一个”解，常用在单数普通名词前，表示未知的，或说话者不愿特别说明的人、地、物等。例如：
Some man at the door is asking to see you.门口有人要见你。
She won a competition in some newspaper or other.她在某报举办的比赛中获胜。
For some reason she didn’t come to school yesterday.由于某种原因，她昨天没来上学。
They plan to visit China some time near year.他们计划在明年的某个时候访问中国。
He must be living at some place not far from here.
他一定是住在离这不远的某个地方
9.“ENT? What does that stand for ?”asked the organizer.──“Illnesses of the ear, nose and throat…”ENT? 它代表什么？组织者问道。──“代表耳、鼻喉科的疾病……”stand for作“代表”解，本句的完整回答是：“It stands for illness of the ear, nose and throat.”ENT是ear, nose, throat。3个词的第一个字母组成的缩略语，这种省略语不管是一个字母或多个字母，当其作主语时，都作单数看待，谓语动词要用单数。例如：
What does C stand for in“37℃”？──It stands for centigrade.
“37℃”中的C代表什么？──代表摄氏(寒暑表)。
UN stands for the United Nations. UN代表联合国。
10. Dr lively was going to talk on that very subject today.
莱芙利博士今天原打算要读的正好是这个题目。
1)介词on在句中作“关于”(about )解。例如：
Have you any idea on that problem ?关于那个问题，你有什么想法。
Dr Baker was asked to give a talk on DNA.
贝克博士被邀请做一个有关DNA的报告。
I can’t agree with you on this point.关于这一点，我不能同意你的意见。
2)句中的very是形容词，修饰后面的名词subject，用来加强语气。作“正好”、“就是”解。
This is the very thing I need.这正是我需要的东西。
He is the very person we are looking for.他正是我们要找的那个人。
She determined to go that very afternoon.她决定就在当天下午走。

《高一英语第二十五单元 At the Conference(第2页)》