1.have a way of...

　way在这里意为“方式，方法”，后面常接介词of。a way of sth./doing sth.表示“(做)某事的方式或方法”。例如:

　He has a good way of working out the problem.

　I don t like his way of living.

　way也可用作“路径”解。例如:

　Can you tell me the way to the library?

　If you lose your way，ask a policeman.

6.Don t touch anything unless your teacher tells you to.

　除非老师让你动，否则就不要动任何东西。=如果老师不让你动，你就不要动任何东西。

　1)unless用作连词，相当于if...not，作“除非……，否则……”解，引导条件状语从句，可放在主句前，也可放在主句后，从句中的动词要用现在时来代替将来时。例如:

　I’ll be back tomorrow unless there s heavy snow.(= I ’ll be back tomorrow if there isn’ t heavy snow.)

　He’ll stay at home unless he is invited to the party.

　2)...unless your teacher tells you to 中 to是不定式符号，后面省略了与主句相同的动词touch，以避免重复，但 to 不能省略。例如:

　-Would you like to go to his birthday party?

　-I d love to(go).

　My parents wish me to study medicine in the future， but

　I don t want to.我的父母希望我将来学医，但我不想。

　Lessons 6 & 7

5.Once you are in here， listen to your teacher.一旦你们进到这里，就要听老师的。

　once这里用作连词，相当于 from the moment that， when，意思为“一旦，一……就”，引导时间状语从句。例如:

　Once she arrives，we can start.

　Once he understands why he must study， he will study hard.

　once还可用作副词，有“一次”或“曾经”的意思。例如:

　They went there once a week.

4.turn off

　turn off意为“切断(电源)，关掉(自来水、电灯、收音机等)”，其反义词为turn on。注意这里不能用close或open。

　例如:

　Please turn off the lights before you go out.

　As soon as he got home，he turned on TV.

3. first of all

　first of all意思为“首先，最重要的”，是first的强调形式，常用于句首。例如: First of all， I d like to say how glad I m here.

　I have a lot to say，but first of all，I want to thank you for your warm welcome.

　[注意]和at first的区别:

　at first意为“开始，起初”，相当于 at the beginning，通常指某事刚发生时的情况，但后来往往发生了变化。例如:

　At first he knew nobody here， but now he has made a lot of friends.

2. make sure...

　make sure表示“务必”，“确信”，“弄明白”，后面常接 of/about sth.或that引导的宾语从句。例如:

　Make sure(that) you will arrive there on time.你务必准时到这。

　I know there s a train this afternoon， but I must make sure of the time.我知道今天下午有列火车，但我必须弄清楚(发车)时间。

　注意:make sure后通常不接不定式。

　误:Make sure to shut the windows.

　正:Make sure that you shut the windows.

　正:Make sure that the windows are shut.

1.Have you been in this lab before?你们以前进过这个实验室吗?Have(Has) been to意为“到过什么地方”。例如:

　I have been to the Great Wall many times.我去过长城多次。

　A:Where have you been?你去哪里了?

　B:I ve been to the library.我去图书馆了。

　Have you ever been abroad before?你以前出过国吗?

　[注意] have(has) been to和 have(has) gone to的区别:have(has) gone to表示:已去某地，或已到达某地。例如:

　My husband has gone to London today.我丈夫今天去伦敦了。

　It s seven already. All the teachers have gone home.现在已经七点了，所有的老师都回家了。

7.Please give my regards/love to your parents.请代我向你父母问好。

　这个句子常用于向别人转达问候之意。例如:

　Please give my best wishes to your family.

　请代我向你全家问好。

　Bob sends his best love to your sister.

　鲍勃向你的妹妹问好。

　例1 单项填空

　-Let me introduce myself， I m Albert.

　-

　A. What a pleasure. B. It s my pleasure.

　C. Pleased to meet you.D. I m very pleased.

　[解析] 答案为C。

　本题考查交际英语。两人初次见面，一方自我介绍后，另一方通常会说“Nice/Glad/Pleased to meet you.”等。

　例2 单项填空

　Go on the other exercise after you have finished this one.

　A. to do B. doing

　C. with D. to be doing

　[解析] 答案为A。

　根据题干中的other可知，说话人是在要“you”做完一件事情后接着去做另外一件事情。

　例3 单项填空

　He fell off his bike. ， he had to stay at home for several days.

　A. In a word B. In other words

　C. As a result D. Once in a while

　[解析] 答案为C。

　卧病在家是从自行车上摔下来的结果，所以该选C。

Unit 2 In the lab

　Lesson 5

6.time area

　time area(= time zone)意为“时区”，指的是某一标准时适用的地区范围。全球共分为24个时区，即中区、东1ˉ11区、西1ˉ11区和12区。格林尼治子午线为中区标准线，相邻两时区的区时相差一个小时。在任意的两个时区之间，相差几个时区，它们就相差几个小时。其中较东的时区，区时较早。

　美国所处的位置在西四区和西八区之间，恰好是五个不同的时区;中国处于东九区到东五区，也是五个不同的时区。但是实际上，为了使用方便，我国大部分地区采用北京所在的东八区的区时，这就是“北京时间”(Beijing time)。

5.as a result

　result意思为“结果”。例如:

　I didn t know the results of the final examinations.

　as a result(=so)意为“因此”。常在上文表示原因的情况下，用来引导结果。例如:

　I got up late.As a result，I was late for class.

　(=I got up late， so I was late for class.)

　2 as a result of...表示“由于……的结果”，常用在上文表示结果的情况下，引导原因。例如:

　As a result of his hard work，he got a pay rise.(= He worked hard.So /As a result，he got a pay rise.)