Unit2 Grammar Focus学案 2023-2024学年人教版八年级英语上册
Unit 2 How often do you exercise?
Grammar Focus (3a--3c)
单元语法：
- 频度副词
(1) 频度副词表示事情发生的频率，可用来回答how often引导的问句。
How often do you go to the movies?
How often does Alex go to New York City?
How often does your brother use the Internet?
(2) 常用的频度副词有：
① always, usually, often, sometimes, hardly ever, never等。其表示的频率由高到低排列如下：
always>usually>often>sometimes>hardly ever>never
② 表示具体的频率、次数时，可用once, twice或“基数词+times”表示，如：
They take their daughter to the park once a week.
Potter goes to the library about three or four times a month.
Dan plays soccer twice a week.
(3) 频度副词在句中的位置：
① 实义动词之前
I usually go to the movies once a month.
He hardly ever goes fishing.
② 助动词、情态动词之后
My father doesn’t often sing.
I will never forget you.
No one can always help you.
③ be动词之后
She is always looking nice.
Ada is always complaining about her life.
④ 有时也可置于句首或句尾。
Sometimes he dances at home.
My family eat out sometimes.
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重点词汇及常用短语：
- sometimes adv. 有时 （相当于at times）
Tim sometimes drink milk for breakfast.
They sometimes go skating in winter.
〖拓展〗sometimes, some times, sometime, some time
sometimes | 频度副词，“有时”，表示动作不经常发生，可位于句首、句中和句末，常用于一般现在时 |
some times | 名词短语，“几次，几倍” |
sometime | 副词，“在某时”，表示某个不确切或不具体的时间常用于过去式或将来时 |
some time | 名词短语，“一段时间” |
My dad sometimes sings in his room.
It takes me some time to finish reading a book.
Lily called me some times in the evening.
My notebook is missing. But I think I can find it sometime.
- healthy breakfast 健康的早餐
其中healthy是形容词，意为“健康的”
We should eat healthy food.
It’s healthy for us to go to bed early.
〖拓展〗healthy的名词形式是：health，意为“健康,人的身体（或精神）状态”
She says it’s bad for my health.
The old man has some health problems.
- at least 至少，不少于，起码
Leo plays the violin at least twice a week.
Fiat goes out with his friend at least five times a month.
〖注意〗least意为“最少的，最小的，最少，最小”，是little的最高级。表示“最少的，最小的”时，修饰不可数名词。如：
Henry has the least experience among all the workers.
Sally has the least money in his family.
- stay up late 深夜不睡，熬夜
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