Unit 4 Space exploration
Section B Discover Useful Structures教学设计
科目:英语 课题:Discover Useful Structures 课时:1课时
Teaching Objects:
(1) Knowledge Objects:
a) Students will learn some words and phrases
b) Students will master the usage of infinitives as adverbials and attributes through self-study and practice
(2)Ability Objective:
Students can use infinitives as adverbials and attributes to express their ideas.
(3)Emotional Objectives:
Students can foster the interest and desire of learning English grammar.
Key and difficult points:
Key point: Help students identify the usage of infinitives as adverbials and attributes
Difficult points: How to use the infinitives as adverbials and attributes in real situation
Major steps:
Step 1 Presentation
(1)Rewrite the sentences using infinitives or “in order to/so as to”.Change the italicised parts accordingly.
Learn from the examples.
1.In 2003 Yuri Malenchenko became the first person who got married in space.
→...the first person to get married in space.
2.In space,astronauts collect all dirty water so that it can be recycled for later use.
→... collect all dirty water so as to recycle it for later use.
3.Mankind has always been curious about the universe and many people have dreamt that one day they would fly into space.
→
4.Astronauts' bones and muscles can get very weak in space due to the lack of gravity,so they need to exercise every day,which will help them stay healthy.
→
5.Astronauts have to use tape to stick everything down while working in space because everything would float off otherwise.
→
6.During a spacewalk,astronauts have to move slowly so that they can keep their bodies under control.
→
(2)Teacher help to conclude the grammar- infinitives as adverbials and attributes and introduce the usage of the grammar
动词不定式作定语和状语
一、动词不定式作状语
动词不定式作状语通常表目的、结果、原因等。
a.表目的
They ran over to welcome the delegates.他们跑过去欢迎代表们。
He stood up to be seen better.他站起来以让别人看得更清楚。
b. 表结果
What have I said to make you so angry?
我说了什么让你这么生气?
He came round to find himself in hospital.
他苏醒过来发现自己住院了。
c. 表原因
不定式表示原因时般放在句子的末尾,说明主语产生某种情感(glad pleased、sad、worried、sad excited)的原因。如:
I'm very glad to hear that Li Lei has been elected secretary of the Party.
听说李蕾被选为了党委书记,我很高兴。
d. 作评论性状语
有些不定式用于修饰整个句子,表明说话者的观点或态度,我们称之为评论性状语。
To be honest,I don't like her.说实话,我不喜欢她。
二、动词不定式作定语
动词不定式作定语常用来修饰名词或不定代词,放在所修饰的词的后面。作后置定语。如:
Who was the first one to arrive?谁第一个到的?
The best way to learn English is to use it.学英语最好的方法是使用它。
When is the best time to plant vegetables?什么时候是种植蔬菜的最好时间?
①动词不定式作定语,它与所修饰的名词或代词可能是主动关系,也可能是被动关系。如果是被动关系,且句中含有不定式动作的执行者时,不定式要用主动表示被动。
He was the last one to leave school yesterday.
他是昨天最后一个离开学校的人。
We have much homework to do everyday.
我们每天有很多家庭作业要做。
②动词不定式(短语)作定语修饰名词且与其所修饰的词之间为被动关系时,如果不定式中的动词为不及物动词,那么其后应加上一个含义上所需要的介词。如:
I have no chair to sit on.我没有椅子坐。
He has no house to live in,他没有房子住。
(Justification: In this way, teachers introduces the situation in which the grammar can be used. Students will have a better understanding of the grammar and learn it easily.)
Step 2 Practice
Activity 1: Students finish the exercise on PPT. Teacher will ask them to check the right answer on PPT.
Activity 2: Pair work. Students read the dialogue with their partners and then change roles. Teacher will point out some mistakes and explain them carefully.
(Justification: Through this part, students can practice the dialogue in pairs and consolidate the grammar.)
Step 3 Production
Group task: Students will be divided in to several groups. They can talk about the ——. Then share the results with whole class. Students are encouraged to use the grammar when talking.
(Justification: Students will learn to use the grammar in a proper way through those activities.)
Step 4 Summary and homework
1. Summary
Students should act as an assistant to conclude what they have learned in this class, and then the teacher will make a summary together with students.
(Justification: Reviewing the important knowledge in this lesson can deepen students' impression and form good study habits)
2. Homework
Finish the exercise in PPT.
(Justification: Retelling can help students sort out the course content, and the exercise can help students master the grammar better.)
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