1）What was the purpose of his visit？他来访的目的是什么？
2）He came to Beijing for business purpose.他来北京是有商业目的的。
on purpose：专门
3）I had no doubt that she did this thing on purpose.我毫不怀疑她做这件事是有目的的。
10.In the afternoon，we all went off separately to look for new plants.
Go off动词短语
走开
1）She got angry and went off after she heard what I said.听到我所说的她一生气离开了。
响起巨大的声音
2）Although the clock went off，he didn"t wake up.尽管闹钟暴响，他仍然没有起来。
熄灭
3）The lights went off suddenly.灯突然地熄灭了。
腐败
4）“The milk has gone off。”my mother said，“and don"t drink it！”妈妈说道：“别喝那牛奶了，它已经坏了。”
1.He was busy measuring a plant and taking photographs of it.
be busy doing，keep busy doing sth.忙于做某事。
We are busy making preparations for the coming exam.我们正在忙于为即将来到的考试做准备。
measure vt.测量
1）The policeman measured the speed of the car.警察测量车速。
vt.有……的长度，相当于系动词。
2）The room measures 6m long.这间房子有六米长。
n.计量单位
3）The meter is a measure of length.米是一种计量单位。
take the measure of something：测量某物的长度4）I take the measure of the desk following the teacher"s instructions.我遵循老师的指令测量桌子。
n.手段、方式
5）They took a strong measure to deal with the workers.他们采取了强硬的手段来对付工人。
2.分词作为形容词时，A.及物动词中现在分词表示主动和动作正在进行；过去分词表示被动或动作已完成。B.不及物动词中现在分词表示动作在进行，过去分词表示已完成。
例如：A：
There are many wounded soldiers in the battlefield.
My spoken English has greatly improved.
Don"t sit in that broken chair.It"s dangerous.
She is a leading figure in the Party.
Barking dogs seldom bite.
B：
The risen sun，fallen leaves，retired workers，escaped prisoner，a rolling stone，boiling water，boiled water.
另外还有一些假过去分词。如
1）“adj-noun-ed”a warm-hearted man.2）“数词-noun-ed”The one-eyed man is hiding behind the door.3）“数词-度量衡名称”a twenty-cent book分词作表语，现在分词表示主动正在进行，过去分词作表语表示被动已经完成。
The day was so charming！The news is encouraging.
The door remained locked.He seemed quite delighted at the idea.The room was packed with people.
【教学设计示例】
Teaching Aims
1.Help the Ss have free talk on what the conference discussed and the opinions of Yang Pei and Jackie and at the same time present their ideas about the environmental protection through the study of the dialogue（including functional sentences study）。
2.Practise in pairs on talking about the possible results if we continue to destroy the nature around us and go against nature.
3.Study the language items in the lesson.
Teaching procedures
Step I Warming-up
1.T lets the Ss look at the picture at P49 on the books，then asks them“What can you see？Tell all of us as much as possible.”
2.Write these words on the Bb.For example：THE INTERNATIONAL CONFERENCE FOR THE ENVIRONMENT PROTECTION-SAVING THE EARTH
3.Get some good students to talk like the officials attending the conference from different countries about the problems in their separate countries.（give them a model）
StepⅡListening
1.Let the Ss listen to the tape one or twice.
2.After listening and ask students to do the pair work，just as one is Yang Pei to ask questions，the other is Jackie to answer the questions，like the following（or use the Exe1 on Page 113）：（1）What was the conference like？
（2）What did you do at the meeting？
（3）What do you talk about mainly at the conference？
（4）What do we Chinese have to do for nature？
StepⅢReading
1.Get Ss to read the dialogue again and then do Ex2 P113 SB without discussion，then check the answers.
2.Language points explanation and study，including：
1）It was called that……2）damage 3）waste 4）fit 5）we"ve got to……（we have to do……）6）hear about 7）standing room 8）pay attention toStepⅣPractice
1.Ask Ss to try their best to give a passage using the expressions they learned as many as possible.
2.Divide the Ss into several groups which have different topics about the environment pollution.And discuss the methods to deal with these problems.（for example，one group about water pollution，one is about population etc）。Everyone should take part in the discussion and show their opinions.And at last elect one representative to give and summary about their discussion.
Sentence Patterns like：
1）Well，I think it is necessary for—2）I don"t agree with you.I think we need——etc？）
2.Ask one group of the Ss to perform the discussion to the class.（if time permitting）
3.Ask one or two representatives to give their conclusion.
Step V Summary
Questions：
1.Which phrase we have learnt in the dialogue can be used to show your agreements？（agree with，That"s quite right，It"s a good idea.）
2.What phrase can we use when we agree or disagree with sb.or to sth.？
StepⅥHomework：
1.Ex 3 on Page 11
3.Give several possibly-used expressions in the translation of the sentences.
2.A good preparation of key words is needed.of Lesson 34.
Lesson 34
Teaching Aims
1.Through the study of Lesson 34 students should have a clear comprehension of the pollution.
