单元目标
1．能用正确的语音、语调朗读课文．
2．复习第一单元至第六单元出现的日常交际用语以及本单元表达喜好和厌恶的日常交际用语．
3．语言运用，围绕双胞胎这一题材让学生讲述他们所了解的有关双胞胎的趣闻．
不定式短语，在某些情况下，前面可带一个连接代（副）词．这种不定式短语相当于一个名词从句，在句中可以作主语、宾语和表语．
I don’t know
what to do．=
what I should do．
when to leave．=
when I should leave．
how to do it．=
how I should do it．
Whether to build a hospital here is not yet decided．
是否在这里建医院还没决定．
I had no idea which one to take．
我不知道拿哪个好．
The question is how to put the plan into practice．
问题是如何把这计划付诸实施．
核心知识
1．Let me remind you what we are looking for：seaweeds，fish，plants，all living things．
让我提醒你们要找什么：海藻、鱼、植物、所有的生物．
remind vt．提醒，使想起（cause sb．to remember to do sth．）
Please remind me that I must call him up before noon．
请提醒我在中午前给他打个电话．
The film reminded me of what I had experienced in the countryside．
这影片使我回想起在农村所经历的故事．
2．When you find anything，make a note where it is found，and do a drawing in your notebook．
如果你们发现了什么，在笔记本上记下在什么地方发现的，并画好图．
1）make a note记笔记（make notes，take notes）
He spoke so fast that it was diffcult to make notes．
他讲得太快，要记笔记是困难的．
2）where引导的从句是地点状语从句．例如：
Make a mark where you have a question．
在有疑问的地方做个记号．
I can’t find my books where I left them．
在我原来放书的地方找不到我的书．
Where there is smoke，there is fire．
哪里有烟，哪里就有火（无风不起浪）．
3）do a drawing中的drawing是名词．do可以和很多名词组成短语．例如：
do a room收拾房间 do a movie拍摄影片
do a puzzle解谜 do flowers插花
3．It looks as if it isn’t clean enough to bathe．
看上去这水太脏不能洗澡．
look as if看上去好像
It looks as if the coming autumn harvest will be even better than the last one．
看来即将到来的秋收将比去年更好．
It looks as if we are going to have fine weather．
天气好像要转晴了．
look as if常用在虚拟语气中，例如：
He looks as if he had seen a ghost．
他看上去仿佛见了鬼似的．
4．How can they get rid of waste water in this way?
他们怎能用这样的方式处理废水?
get rid of去掉，除去，摆脱
How to get rid of the rubbish is a big problem．如何清理这些垃圾是个大问题．
It is not easy to get rid of a bad habit．要改掉坏习惯不是件容易的事．
He can’t get rid of his headache．他头痛老是不好．
5．I suppose it’s better to be safe than sick．
我想平安总比得病好．
suppose vt．猜想，假定（表心理状态的动词）
（没有一定的根据）猜想：I suppose he has gone to the countryside．
我想他也许到农村去了．
（有相当根据）假定：Let us suppose that the news is true．
我们假定这个消息是真的．
（用祈使语气表示建议）让：Suppose we go（=Let’s go）for a swim．
我们去游泳吧．
be supposed to应该，被期望
Everyone is supposed to wear a seat belt in the car．
每个人都在汽车里都应该系好安全带．
6．It will be many years before the chemicals start to escape from the containers．
那些化学物品从金属容器中溢出要好多年．
“It will be + time + before+从句”是一个句型．在这个句型中，主句的谓语可以用is／was表示现在或过去的时间．例如：
It will be years before we meet again．
我们要过好多年才会再见面．
It was a long time before the patient came to．
过了很长时间病人才苏醒过来．
It was not long before they left for the south．
不久，他们就动身到南方去了．
7．At one time，certain types of radioactive waste were put in the sea in metal containers．
过去有一段时间，有些放射性废物是放在金属容器中倒入海中的．
at on time曾经一度，过去有段时间（during a period of past time）
At one time the whole area became covered with water．
曾有一个时期，这个地区全部被水淹没了．
At one time，I used to go mountain-climbing every summer．
过去有一段时间，我每年夏天都去爬山．
8．She has also been very active in protecting the environment．
她（中国）也在积极地保护环境．
1）She作为人称代词可以用来代表国家、船只、大地、月亮等．
The“Jiang Han’is due in tomorrow，isn’t she?
江汉号轮船明天进港，是吗?
2）be active in积极参加，积极从事（take an active part in）
Lincoln was active in politics and was strongly against slavery．
林肯积极参加政治活动并强烈反对奴隶制度．
9．As the wealth of the country increases，more waste will be produced．
随着国家财富的增长，将产生更多的废物．
as引导的是时间状语从句．在这儿as与when相似，但它更强调主、从句动作在同一时期发生或动作紧接着发生．例如：
As he talked on，he got more and more excited．
As it became more commmon for women to work outside the house，men began to share the housework．随着妇女就业普遍了，男人也开始分担家务劳动．
10．The ink is taken out by a special technique
有特殊的技术把油墨去掉，……
take out去掉（污点等），擦掉（笔迹）
How can I take out these ink stains from my coat?
我怎样才能把外套上的墨水污迹去掉呢?
He took out the pencil marks from his drawing．
他把画上的铅笔痕迹擦掉．
典型例题
讨论难点
正确使用下面的词或词组．
1．Hand out把……拿出来；分派；施舍
例如：1）They handed out leaflets to people．
他们向人们发传单．
2）The teacher handed out the books to the students at the beginning of the lesson．
刚开始上课，老师就把书发给了学生．
2．请注意正确使用和hand搭配的一些词组．
1）hand back交还
例：Please remember to hand back your room key before leaving the hotel．
记得离开旅馆时交还钥匙．
2）hand down传下去，传给
例：My father handed down the gold watch to me．
父亲把这块金表传给了我．
3）hand in交上去
例：Hand in your test paper at the end of the class．
下课时请把试卷交上来．
4）hand on传给另一个人，依次传递
例：Please hand on the newspaper to your classmate when you have finished reading it．
请看完报纸后传给你的同学们．
5）hand over移交，交给别人
例：The thief was handed over to the police．
那个小偷已被送交警察．
剖示考点
简单情景题
简单情景题是指考生在解题过程中除要考虑广义的语法规则，上下文规则外，还要遵循说话者身份、内容、场合等因素，注重交际的得体性．
例1 NMET 1998
-Can I get you a cup of tea?
-_____________．
A．That’s very nice of you B．With pleasure
C．You can，please D．Thank you for the tea
本题对话提供的情景是前一个人提供帮助．在日常交际中，对提供帮助等的应答用Yes，please．／Thanks．That’s very kind of you或No，thanks等．所以正确答案是A．
例2 NMET 1999
-I had a really good weekend at my uncle’s．
-_____________．
A．Oh，that’s very nice of you B．Congratulations
C．It’s a pleasure D．Oh，I’m glad to hear that
本题上句叙述了一件令人高兴的事，（在叔叔家度过了一个很愉快的周末），另一个人听了以后同样表示高兴．四个选项中表示喜悦的交际用语应该是D．