人教版英语八年级上册unit 2 how often do you exercise 单元语法小专题

Unit 2 How often do you exercise?单元语法小专题(Grammar Focus)

语法精讲

频度副词

1．频度副词的定义：表示动作或状态出现的频率的副词叫频度副词。

2．常见表示频率的副词有以下几个，它们在频度上的差异可以这样表示：

频度副词在句中常位于be动词、助动词或情态动词之后，实义动词之前。sometimes有时可位于句首或句末。如：

I am always busy with my work.我总是忙于我的工作。

Susan doesn't usually eat breakfast at school.苏珊在学校通常不吃早饭。

He sometimes gets up at 5：30.＝Sometimes he gets up at half past five.他有时五点三十分起床。

4．表示频度的短语：

once/twice a week一周一次/两次

three times a day一天三次

every day/week/year每天/星期/年

【注意】表示“三次或三次以上”一般用“基数词＋times”。

5．当对频度副词或表示事件发生频率的短语提问时，常用how often，意为“多久一次”。如：—How often does Lisa go to the movies？丽萨多久看一次电影？

—Never.从不。

6．频度副词或短语常与一般现在时连用。如：

I never eat meat.我从不吃肉。

Jim usually does his homework in the evening.吉姆通常晚上做作业。

Sally doesn't often watch TV an the weekend.萨利周末不常看电视。

How often do you eat fruit？你多久吃一次水果？

语法精练

Ⅰ.从括号内选择合适的单词或短语完成句子。

1．My mother is very busy，so she hardly(hardly/usually) goes shopping.

2．We all like Jim，because he is kind and always(never/always) helps others.

3．I know vegetables are good for me，but I hardly__ever(often/hardly ever) eat them. 4．Julie never(usually/never) watches sports shows because she doesn't like sports at all. 5．—How__often(How often/How soon) do you go to the movies?

—Sometimes.

Ⅱ.按要求完成下列句子，每空一词。

6．She washes clothes every Sunday.(改为否定句)

She doesn't wash clothes every Sunday.

7．Jack usually does his homework at school.(改为一般疑问句)

Does Jack usually do his homework at school?

8．They go to the science club three__times__a__week．(对画线部分提问)

How often do they go to the science club?

9．Frank usually listens__to__music in the evening.(对画线部分提问)

What does Frank usually do in the evening?

10．We have English lessons on Monday，Tuesday，Thursday and Friday.(改为同义句) We have English lessons four times a week.

Ⅲ.根据汉语意思及所给提示，翻译下列句子。

11．夏天的下午我们通常在公园里玩。(usually)

We__usually__play__in__the__park__in__the__afternoon__in__summer.

12．我的妈妈上班从不迟到。(never)

My__mother__is__never__late__for__work.

13．你经常在学校图书馆读书吗？(often)

Do__you__often__read__books__in__the__school__library?

14．不要总是待在家里看电视。(always)

Don't__always__watch__TV__at__home.

15．有时我坐汽车去那里。(sometimes)

Sometimes__I__go__there__by__car.

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