Planting trees
关于计量表达法的教学建议
本单元第42课教学了计量 (measurement)表达法。
表示计量的方法是：数词+metres/ kilometres +long/wide/deep/high/tall…
表示重量可用数词+kilograms +heavy.
The classroom is 4 metres wide.这个教室有4米宽。
The river is about 10metres deep.这条河大约有10米深。
教师可利用学生身边的事物教学计量表达法。例如描述教室及桌椅，可说出以下句子：
The classroom is 3. 5 metres high, 4. 5 metres wide and 5. 5 metres long.
The table is half a metre high.
也可以出示一幅世界地图，让学生造句：
The Yellow River is 5, 464 kilometres long and between…and…metres deep.
Mount Qomolongma is 8848. 13 metres high.
The Yangtze River is about 6,300 kilometres long.
The lake is between 150 and 250 metres wide.
以上例句呈现完毕后，可让学生自己归纳计量表达法的特点，并将它写在黑板上：
metre (s) /kilometers + long/wide/deep/high/tall …
第43课第一部分和此课练习册 Ex2是为练习计量表达法而设计的。教师还可要求学生造句，造句最多而错误最少的学生将给予奖励。
Lesson 41
Properties: Recorder; Overhead Projector; Pictures
Teaching Objectives:
1. Learn how to plant a tree.
2. Learn some useful expressions.
Language Focus:
neither…nor, tie…to, must, should.
Teaching Procedures:
I. Showing the teaching aims
II. Revision
Check homework. Read some perfect writing to the class.
III .Leading in
T: There are four seasons in a year. They are spring, summer, autumn and winter. Most people like spring. Because we can see trees and flowers. Tomorrow is Tree Planting Day. It’s March 12 tomorrow. So what is happening tomorrow? Lets listen to the tape, try to find the answer.
Get the students to read the dialogue and repeat after the cassette. Then let the students practise the dialogue in pairs.
IV. Teaching Reading
Just let the students understand the reading, do not pay more attention to the new knowledge. Look at the books, read the instructions with the whole class. Explain: just right, neither.. .nor
Read the passage “How To Plant A Tree” and answer the questions at the bottom of the page with the whole class.
The answers are: 1.F 2.F 3.F 4.T 5.T 6.F 7.T
V. Practice
Get the students to listen to the reading. Then read after the tape, ask the class to read it by themselves. Choose some of them to read in class.
VI. Teaching Language Focus
Remind the students of instructions using “must” and “should”. Draw this table on the blackboard.
The earth should
The hole should not
The ground must
The tree must not
Get the students to make up sentences using those boxes. Pay attention to the followings. Let the students really understand them.
1. neither: Neither answer is right. Neither of his parents is a teacher.
Note: neither…nor…
Neither Tom nor Jane is from American.
Neither you nor I am right.
2. tie ...to...
Tie the tree to the top of the stick to keep it straight.
Tie the cat to the door to keep it quiet.
3. so that
He gets up early every day so that he can get to school on time.
Anna studied very hard so that she could catch up with the class.
VII. Workbook
Do Exercise 1. Write down the missing words; 1. plant, shall, dig, get/carry, help 2. enough, right 3 .put, sure, earth.
For Exercise 2, let the students read the model first, then practise orally with their partners. Finally write down the answers.
VIII. Consolidation
Ask the students to tell the class how to plant a tree .
Exercises in class
Fill in the blanks with the right form
1. Come to school __________ your old clothes tomorrow.
2. It’s Tree __________ Day.
3. The ground must be ___________ right ___________ too wet ___________ too dry.
4. Dig a hole large ___________ for the tree.
5. Water it well, as ___________ as possible.
6. Tie the tree to the top of the stick to keep it ___________.
7. Knock a long, strong stick ___________ the earth ___________ to the hole.
IX .Homework
1. Finish off the workbook.
2. Revise the contents of this lesson.
Lesson 42
Properties: Recorder; Overhead Projector; Pictures.
Teaching aims
1. Let the students get the main idea of this passage.
2. Learn some useful words and expressions.
3. Let the students understand the impor
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