Unit 1 How often do you exercise 教案、说课、备课资料
Unit 1 How often do you exercise?
一、重、难点解析：
1、频度副词：always, usually, often, sometimes, hardly和never是英语中最常见的频度副词，它们在句中的位置大致相同：通常放在行为动词之前，系动词be、助动词和情态动词之后。但它们所表示的含义及频度是各不相同的。
（1）always的频度为100%，表示动作重复、状态继续，中间没有间断，意思是“总是”、“永远地”。例如：
The sun always rises in the east and sets in the west. 太阳总是东升西落。
（2）usually的频度为70%左右，意为“通常”、“平常”，即很少有例外。例如：
He usually goes to bed at ten o’clock. 他通常10点钟睡觉。
（3）often的频度为50%左右，意为“常常”，但不如usually那么频繁，表示动作重复，中间有间断。例如：
He is often late for school. 他上学经常迟到。
（4）sometimes的频度为20%左右，意为“有时”，表示动作偶尔发生。可以位于句首，以示强调。例如：
It is sometimes hot and sometimes cold. 天气忽冷忽热。
Sometimes he does it this way and sometimes he does it that way. 他有时这样做，有时那样做。He sometimes goes to movies on Friday evening. 他有时周五晚上去看电影。
（5） hardly的频度为5%左右，意为“几乎不”、“简直不”，常和ever连用表示强调。例如：
I hardly ever go out these days. 这些天我几乎不出门。
（6）never的频度为0，意为“从来不”、“永不”。例如：
My parents are never late for work.我父母上班从来不迟到。
2、 疑问词how的用法
（1）怎样，用什么手段，方法。 How did he do it?
I don’t know how to swim.
（2）情况如何（指身体健康状况） How are you?
How’s it going with Tom?
（3）how many，how much表示“多少”
how many后接可数名词复数，how much接不可数名词。
How many times do you go to the park?
How many tickets do we need?
How much water do we need every day?
How much are those pants?
（4）how often是对动作发生的“次数”提问,询问的是频率“多久一次”
回答可以是：Every day./ Once a week./Three times a week./ Often./ ...
How often do you play tennis?
How often do you surf the internet.
(5) How long... ? 询问的是时间长短“多长时间”
回答可以是：for+一段时间/About one hour./ Three hours. / Thirty minutes./...
How long do you usually watch TV? 你通常看多长时间电视？
-How long did he be away?(leave为短暂性动词，故换为短语be away)
-For ten years.
(6) how soon 对（从即时起）到将来某个时刻间的时间长短提问，回答通常为 in+一段时间。如：
-How soon will you be back？
-In two days.
3、“次数”的表达方法
一次 once， 两次 twice，三次或三次以上用基数词加上times，three times、five times、one hundred times.
表示“……几次”的表达方法是：once a day/ a week/ a month/ a year twice a day/ a week/ a month/ a year
4、 exercise的用法
（1）作可数名词复数exercises。意为“运动、体操”。
（2）作不可数名词，意为“练习、习题”。
I have to do so much exercise.
He bought a new exercise book.
（3）作动词，意为“练习、运动”。
How often do you exercise?
I exercise every day.
5、look的用法
look after 意为“照顾、照看”。
So you see, I look after my health. 所以你看，我很在意我的健康。
Can you look after my baby when I leave?
Please look after your own bags carefully.
look at“看，认真地看”。 Please look at the blackboard.
Some people are looking at the notice.
look for“寻找” Old Henry looked for his dogs, but he didn’t find it.
I’m looking for my lost pen
6、不定代词all“所有的，全体的”，most“大部分的，大多数的”，some“一些”，no“没有一个”的用法。
All the waiters in the restaurant are very busy.
All the students in our school have to wear school uniforms.
I know most people in this party.
Most students play computer games on weekends.
Gina has some beautiful scarfs.
Some students go to English movies every day.
No children can sing this song.
all, most, some, no 放在名词的前面做定语，表示数量的多少。