小学英语语法新视野 3 Unit 4

have to have/has/had to do… don’t/doesn’t/didn’t have to do… do/does/did + sb. + have to…?
must 与have to 的区别
异： must多表示主观意志，是从说话人的角度出
发Leabharlann Baidu必 须做某事。而have to强调客观需要。
Teaching Difficulties
using the grammar structure in the context.
Teaching Aims
a. Have Ss read the words correctly. b. Have Ss use the grammar structure in the context. c. Have Ss talk about chores with the words.
Translation:
妈妈不在家，因此我不得不照看商店。 Mother is out, so I have to look after the shop. 我必需要留下来照看店。 I must look after the shop. 你必需留下看店。 You must look after the shop.
Let’s review!

定义 :
英语中always, usually, often, sometimes, rarely, never等，叫做频度 副词。这类词用来表示某一动作发生的频 率，或某一状态出现的频率，即在一定的 时间内动作重复发生或状态重复出现的次 数 .
分类：
模糊频度副词 精确的频度副词
Practice 1
1．我们必须自己动手去做。 We have to do it ourselves. 2．玛丽必须在英语学习上努力吗？ Does Mary have to study hard at English? 3．上周日他不得不早起。 He had to get up early last Sunday. 4．你没必要为你的功课担心。 You don’t have to worry about your lessons. 5．彼得很累，不得不坐下来休息一会儿。 Peter was very tired and he had to sit down and have a rest.
e.g. a. I must finish my homework today. lunchtime. 不得不 c. I must learn another language. d. I have to learn another language.
必须
b. I have to finish my homework before
e.g. I drink milk and eat vegetables every day.
我每天喝牛奶，吃疏菜。
I exercise once a week.
我每周锻炼一次。
I eat KFC twice a month.
我一个月吃两次肯德基。
How to ask？
对划线部分提问： He plays football every day. How often does he play the football?
Unit 4 Have to, has to
Teaching Contents
Key words: bedroom, hang out, washing, brush, takeout, rubbish ,washing up, sweep, bathroom Sentence structure: I have to tidy my bedroom. He has to wash the dishes.
6.昨天他不得不待在家里。 He had to stay at home yesterday. 7.他不得不跑回学校取他的作业本。 He had to run back to school to get his exercise-books. 8.你必须早些离开吗？ Did you have to leave early? 9.我没必要躺在床上。 I don’t have to stay in bed. 10.我们必须认真听老师讲课。 We have to listen to the teachers carefully.
Practice 2
Speaking: (pair work) 1.Do you have to tidy your room? 2.Do you have to take out the rubbish? 3.How often do you have to sweep the floor? 4.How often do you have to clean the bathroom?
e.g. a. I must finish my homework today. lunchtime. 不得不 c. I must learn another language. d. I have to learn another language.
必须
b. I have to finish my homework before
Writing Task
Write a short passage (at least 60 words) about your chores. (using have to)
Grammar
pattern
Have to Has to
How to use?
Practice
What?
Have to
swim Play football
dance
skate Play
always
badminton
Play basketball
usually often
sometimes
rarely never
精确的频率副词:specific 准确地表达事情发生的频率。
一次 once 两次 twice 三次 three times
Homework
1. Write the words(3+1); 2. Write the sentences twice. 3. Finish the paper.
表示“不得不”、“必须”。在肯定句中have to 随 人称 和时态的不同而变化。其否定式和疑问式 的构成形式 与行为动词have相同，即需使用助动词。 e.g 1). It’s too late. I have to walk home. 2). They don’t have to finish the work today. 3). He had to leave early yesterday. 4). Did he have to leave early yesterday？
注意：在记忆时，我们只要 记住once（一次）和twice （二次）就可以了。其他发 生次数只要用“数字＋ times”来表达就可以了。
every day 每天 four times a year 一年四次
once a week 一周一次 once two weeks 两周一次
twice a month 一 个月两次 Six days a week 一周六天
Once /twice/three times/six days a week
Now read your passage!
Well, in the morning, I usually get up at about seven a.m. I need an alarm clock of course! I never get up immediately. I lie in bed for ten minutes，thinking about what I need to do that day. I always brush my teeth as soon as I get up. I usually have some eggs for breakfast, but I rarely drink coffee, it is too bitter, but I often have some milk. After that I go to work.
have to have/has/had to do… don’t/doesn’t/didn’t have to do… do/does/did + sb. + have to…?
must 与have to 的区别
异： must多表示主观意志，是从说话人的角度出
发谈必 须做某事。而have to强调客观需要。
模糊频度副词 general
这些词都是表示事情发生频率的副词， 也是不准确地说某事在一段时间内发 生的次数。
always
usually
often
sometimes
rarely never
100% 总是
80% 通常
60% 40% 经常 有时
20% 0 很少， 从不 几乎不
Adverbs of frequency
Grammar
pattern
Have to Has to
How to use?
Practice
What?
Have to
表示“不得不”、“必须”。在肯定句中have to 随 人称 和时态的不同而变化。其否定式和疑问式 的构成形式 与行为动词have相同，即需使用助动词。 e.g 1). It’s too late. I have to walk home. 2). They don’t have to finish the work today. 3). He had to leave early yesterday. 4). Did he have to leave early yesterday？