Grammar教案（名师）

Module5 A lesson in a Lab Introduction and Gammar1

ⅠTeaching Aims：

1.Knowledge and Skills 1) Train the students’ speaking &listening skills.

[来源:Z,xx,k.Com]

2) Learn the following words and phrase：liquid, expand, contract, substance, mixture, oxygen, iron, heat, a mixture of.

3)Train the students’ induction ability(degrees of comparison-how to express times) 2. Process and Methods 1) train the students’ speaking ability through individual and pair work.

2)learn to research by cooperation and induce and summarize the rules of the degrees of comparison. 3. Emotion and Values 1) Try to raise the students’ cooperation awareness in

their study. 2) Advocate the students’ love for science.

4.Important points and difficult pints: 1.Deal with some difficult language points.

[来源学科网]2. Help the students learn how to express their ideas using this grammar item. 5.Teaching method: Individual work&listening&induction&exercises ⅡTeaching Procedures Step1 :Lead-in and introduction 1.

Play a short video of my son (about dream)

He wants to be a scientist, and he loves doing experiments. Ask the students if they want to be a scientist, and if they like doing experiment in the lab, by this way, stimulate students’ interest in science and lead in class. 2.

Introduction

1)Before reading, let students go through these words.contract expand air [来源学科网ZXXK]

gas liquid[来源学&科&网Z&X&X&K]

solid surface iron heat metal Make sure the students know the Chinese meaning and pronounce them correctly.

2)let the students read the quiz, and choose the answers they think are right.

3) go through these sentences and make sure the students understand.

4)then listen to the tape and check the answers.

5) language points

·Steal is a mixture of iron and other substance a mixture of …的混合物

E.g. The

air is a mixture of oxygen and other gases. ·Two thirds of the earth’s surface is water. “分数、百分数+of+名词/代词”作主语时，谓语动词的单复数与of后的名词或代词的数相一致。

E.g. Four fifths of the work has been finished.

90% students in our class have mobile phones.

Exercises: 4/5 of the work ______ (have) been

finished.

90% of the teachers _________(take) part in the sports meeting every year.

2/3 of the water in the area______ (be) polluted.

60% of the children ________(like) playing this game.

·The earth is forty-nine times larger than the moon.

The earth is forty-nine times as large as the moon.

The earth is forty-nine times the size of the moon. Step 2: Grammar1

1.

Conclude the rules of the degrees of comparison. How to express times:[来源学_科_网][来源:Zxxk.Com]

2.let the students translate the two sentences in three ways. 这个男人是他三岁儿子的4倍高

The man is

four times as tall as his three-year-old son. Or we can say: The man is four times taller than his three-year-old son. The man is four times the height of his three-year-old son. 这位老人的年龄大约是她孙子的6倍。[来源:学#科#网]

The old woman is about six times as old as her granddaughter. Or we can say: The old woman is about six times older than her granddaughter. The old woman is about six times the age of her granddaughter. 2.let the students

do activity 2 on Page 43.

First go through these exercises, and let the students do individually.

Then ask some students to write them on the blackboard.

Let other students check if there are any mistakes.

Finally, call back the right answers. Step3:Conclusion and Homework. 1.Conclude what we have learned this class. 2.Homework.

ⅠPrepare for the reading part. ⅡComplete the following exercises：

·____________(五分之二) of the workers in our factory _____women.·Only 40% of the newspaper

______ (have) been sold out. ·Air is a ________ of oxygen and other gases. ·The

new road is_____________________(是…的三倍宽) the old one.(三种表达法) ·The

room is ______________________(是…的两倍大) that one. (三种表达法) [来源:Z。xx。k.Com]