八年级上册英语第2单元知识点

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八年级上册英语第2单元知识点

一、重点单词。

1. housework.

- 名词,意为“家务劳动;家务事”。例如:I often help my mother do

housework on weekends.(我经常在周末帮助我妈妈做家务。)

2. hardly.

- 副词,意为“几乎不;几乎没有”,本身含有否定意义。例如:He can hardly

speak English.(他几乎不会说英语。)

3. ever.

- 副词,意为“在任何时候;从来;曾经”。常用于现在完成时的一般疑问句和否定句中。例如:Have you ever been to Beijing?(你曾经去过北京吗?)

4. once.

- 副词,意为“一次;曾经”。例如:I go to the movies once a month.(我一个月去看一次电影。)也可作名词,意为“一次”。

5. twice.

- 副词,意为“两次;两倍”。例如:I have been to Shanghai twice.(我去过上海两次。)

6. Internet.

- 名词,意为“(国际)互联网;因特网”。例如:We can get a lot of

information on the Internet.(我们能在互联网上得到很多信息。)

7. program. 8. full.

- 形容词,意为“忙的;满的;充满的”。be full of = be filled with,意为“充满……”。例如:The glass is full of water.(杯子里装满了水。)

9. maybe.

- 副词,意为“大概;或许;可能”,一般用于句首。例如:Maybe he is at

home.(也许他在家。)注意与may be(可能是,作谓语)的区别,如:He may be

at home.(他可能在家。)

10. least.

- 形容词或副词(little的最高级),意为“最小;最少;最轻微”。at least意为“至少;不少于;起码”。例如:You should sleep at least eight hours

every day.(你每天至少应该睡八个小时。)

二、重点短语。

1. help with housework.

- 意为“帮忙做家务”。例如:My sister often helps with housework on

Sundays.(我妹妹经常在周日帮忙做家务。)

2. go shopping.

- 意为“去购物”。例如:She goes shopping once a week.(她每周去购物一次。)

3. on weekends.

- 意为“在周末”。例如:What do you usually do on weekends?(你周末通常做什么?)

4. how often. - 意为“多久一次”,用来对动作发生的频率进行提问。例如:How often do

you exercise?(你多久锻炼一次?)

5. hardly ever.

- 意为“几乎从不”。例如:He hardly ever eats junk food.(他几乎从不吃垃圾食品。)

6. once a week.

- 意为“每周一次”。类似的还有twice a week(每周两次),three times a

week(每周三次)等。

7. be good for.

- 意为“对……有好处”。例如:Eating vegetables is good for your health.(吃蔬菜对你的健康有好处。)

8. junk food.

- 意为“垃圾食品”。例如:We should not eat too much junk food.(我们不应该吃太多垃圾食品。)

9. more than.

- 意为“多于;超过”,相当于over。例如:There are more than fifty

students in our class.(我们班有五十多名学生。)

10. less than.

- 意为“少于”。例如:He sleeps less than seven hours every day.(他每天睡眠少于七个小时。)

三、重点句型。

1. What do you usually do on weekends? - 这是一个用来询问对方周末通常做什么的句型。回答可以是:I usually play

basketball on weekends.(我周末通常打篮球。)

2. How often do you...?

- 用来对动作发生的频率进行提问。其回答通常是频度副词或短语,如always(总是),usually(通常),often(经常),sometimes(有时),hardly ever(几乎从不),never(从不)或者once a week(每周一次),twice a month(每月两次)等。例如:

- How often do you go to the library?

- I go to the library once a week.

3. She says it's good for my health.

- 这是一个含有宾语从句的句子,其中it's good for my health是宾语从句,作says的宾语。be good for...表示“对……有好处”。例如:My mother says

it's good for my study to read books.(我妈妈说读书对我的学习有好处。)

四、语法知识 - 频度副词。

1. 概念。

- 频度副词是表示动作发生频率的副词,常见的有always(总是),usually(通常),often(经常),sometimes(有时),hardly ever(几乎从不),never(从不)等。

2. 用法。

- 频度副词一般放在实义动词之前,be动词、助动词或情态动词之后。例如:

- He always gets up early.(他总是早起。)

- She is often late for school.(她上学经常迟到。) - 对频度副词提问时,用how often。例如:

- He usually goes to school by bike.(他通常骑自行车上学。)

- How often does he go to school by bike?(他多久骑自行车上学一次?)