Unit2

一、必背句子：

What do you usually do on weekends?

I often go to the movies.

How often do you watch TV?

I watch TV every day.

What’s your favorite program?

Animal World.

Are you free next week?

Next week is quite full for me.

How come? 为什么

I have class once a week.

How many hours do you sleep every day?

Fifteen percent of our students exercise every day.

Old habits die hard.

What percent of the students do not exercise at all?

二、短语：

on weekends 在周末

go to the movies 去电影院

go shopping 去购物

twice a week 每周两次

use the internet 使用网络

swing dance 摇摆舞

hardly ever 几乎从不

go online 上网

more than 多于

less than 少于

one to three a week 一周一到三次

pie chart 饼图

teeth cleaning 清洁牙齿

三、重要语法：

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。

常用的频度副词：always(100%) > almost always > usually > often > sometimes > hardly ever(seldom) > never(0%)。

频度副词通常放在动词前面，若句子中有情态动词、助动词或系动词be，则放在这类动词的后面。

英语中百分数的表示方法：基数词 percent。

on weekends:指每个周末；on the weekends:指在这个周末。

Sometimes:指有时候；some times:指几次/倍；sometime:指某个时候；some time:指一段时间

确信：be sure of;

be sure to do;

be sure that.。

弄清楚：make sure of;

make sure about;

make sure that…

辨析：

how often:指多久；

how many times:指多少次。

die from:指死于外因

die of:指死于自身原因