用演绎法和归纳法讲授语法优缺点分别是什么
A. It is + adj. + to do
B. It is + adj. + for sb + to do
C. It is + adj. + that
这三种句式在前面的教材中都出现过，学生掌握这三种句式本身并不难。本课的重点是怎样用这三种句式来描述生活中的个别现象，尤其是本课学的新话题慈善步行的一些阐述。也就是本节语法课的有效教学应体现在运用上。
2. 学生情况分析
九年级学生通过前面养生小妙招
几册书的学习，只要老师引导有方，应该有话可说，有话要说，他们在前面两单元刚刚学了国内、国际的一些慈善机构，而这些话题离学生的生活相对远了些。因此通过新句式复习学过的话题以达到温故而知新的目的。
3. 教学目的
A. 用It is +adj. + 带to的不定式来描 述行为和情境
B. 用It is +adj. +for + 带to的不定式来具体说明正在谈论的对象
C. 用It is + adj. + that 来表达自己对某件事的感受
4. 教学方法
启发式， 小组合作法，主体参与法，自主学习法
5.设计思路
第一步，通过口头改写两组句子，让学生自己总结归纳出第一种句式It is +adj. + to do ，然后再让学生用这种句式进行自由造句，选词造句。
第二步，通过完成课本第101页的选词填空，然后选出有代表性的五个句子让学生口头翻译并打在屏幕上，让学生自己总结归纳出第二种句式It is +adj. + for sb + to do， 再让能力较强的学生用这种句式自由造句。
第三步，通过完成课本上的重组练习，学生自己归纳总结出第三种句式It is + adj. + that，然后学生自由造句以达到巩固之目的。
第四步，设置一些图片并提供必要的单词，让学生根据图片自由造句，以便所有的学生对着三种句式有一个从感性到理性的认识。
第五步，选择四幅与慈善机构有关系的图片进行小组练习，每组选择一幅图
片用本堂课学的三种句式先造句，然后组成文章说出来，最后写在作文本上。
6. 教具: 多媒体
二、教学步骤
Task1: Prent 反省书怎么写
the pattern " It is +adj. + to do "
1. Rewrite the following ntences:
1) To help others is meaningful.
It is meanin最后的风度
gful to help others.
2) To finish the work within an hour is difficult.
It is difficult to finish the work within an hour.
3) To learn to drive is fun.
It is fun to learn to drive.
4) To learn foreign languages is uful.
It is uful to learn foreign languages.
5) To keep the classroom clean is necessary.
It is necessary to keep the classroom clean.
2. Rewrite the following ntences:
1) This question is easy to answer.
It is easy to answer this question.
2) The Reading Club is fun to join.
It is fun to join the Reading Club.
3) French is difficult to learn.
It is difficult to learn French.
4) This kind of medicine is safe to take.
It is safe to take this kind of medicine.
5) The work is meaningful to finish.
It is meaningful to finish the work.
3. Ss Sum up:
It is +adj. + to do
4. Make ntences with the pattern "It is +adj. + to do " freely.
5. Choo one of the words to make ntences with the given information.
do donate give help join keep
1) meaningful, the Tree-planting club
It is meaningful to join the Tree-planting Club.
2) important, parks, clean
It is important to keep parks clean.
3) easy, ats, the elderly
It is easy to give ats to the elderly.
4) good, blind people, cross the road
It is good to help blin指甲没月牙
d people, cross the road.
5) helpful, money, to charities
It is helpful to donate money, to charities.
6) fun唱个
清炖鸡腿
, voluntary , work
It is fun to do voluntary work.
Task2: Prent the pattern " It is +adj. for sb + to do "
1. Ask the question "What should you pay attention to before and during Oxfam Trailwalker? "
Ss' possible answers according to the given pictures:
It is necessary for you to train yourlf before the walk.
It is uful for you to have support teams to bring you food, drinks and warm and dry clothes.
It is necessary for you to support and help each other before and during the walk.
2. Asking about Oxfam Trailwalker, choo the proper phra to fill in the blanks.
important for Ben important for us impossible for you necessary for people meaningful for me
Lucy: What is Oxfam Trailwalker?
Lily: Oxfam Trailwalker is a tough charity walk.
It's __________________ to finish it within 48 hours.
Lucy: What’s a charity walk?
Lily: It is a fund-raising event. It’s _____________to support Ben.
His team needs to rai at least HK$6,000.
Lucy: Can I join it too?
Lily: No, you can’t. You’re not 18 years old yet. It is _______________
to join Oxfam Trailwalker.
Lucy: What are you going to do for Ben? Lily: I am going to donate my
pocket money to support Ben. It’s _________________ to help him.
Lucy: I want to help Ben too. I can give him my bottle of milk.
Lily: What for?
Lucy: It’s ___________________ to drink milk to keep fit.
Lily: Thank you, Lucy, but I think Ben can exerci to keep fit.
3. Ss sum up:
It is + adj. + for sb + to do
4. Make ntences with the pattern "It is +adj. +for sb + to do " freely.
Task3: Prent the pattern "It is + adj. + that"
1. Rewrite the ntences:
1) It’s necessary for people to finish it within 48 hours.
It’s necessary that people finish it within 48 hours.
2) It’s important for us to support Ben.
